Why is jQuery not adding numbers properly?

Why is jQuery not adding numbers properly?

Here is my JavaScript code:

Is the logic contained in this code correct? I noticed that when the $RoundOneEarnings is increased by the correct amount only after the first question is answered. Afterwards, it increases it by the wrong amount.

var $RoundOneEarnings=0; //global variable for Round One earnings.

function showClue(e)
{
    var eventTarget=e.target;
 
    if (eventTarget.id=='10')
    {       
        function inputProcessing (e)
        {
            var $end_time=e.timeStamp;
            var $end_time_converted=$end_time/1000 |0;
            var $elapsed_time=($end_time_converted-$start_time)*(-1)*(1/10) |0;
            if ($elapsed_time<=1)
            {
                $('#top-result').text('Elapsed time: '+$elapsed_time+' second;');
            }
            else
            {
                $('#top-result').text('Elapsed time: '+$elapsed_time+' seconds;');
            }
            var $correct_answer_1='PRESIDENT JAMES MADISON'
              , $correct_answer_2='JAMES MADISON'
              , $correct_answer_3='MADISON';
           if (($('input').val()==$correct_answer_1 || $correct_answer_2 || $correct_answer_3) && $elapsed_time<=5)
           {
               $('#top-result').append('<span id="prize"> CORRECT AND WITHIN TIME LIMIT! +$200!</span>');
               $RoundOneEarnings += 200;
           }
           if (($('input').val()==$correct_answer_1 || $correct_answer_2 || $correct_answer_3) && $elapsed_time>5)
           {
               $('#top-result').append('<span id="no-prize"> CORRECT BUT EXCEEDED TIME LIMIT! -$200!</span>');
               $RoundOneEarnings -= 200;
           }
           if (($('input').val()==!$correct_answer_1 || !$correct_answer_2 || !$correct_answer_3) && $elapsed_time<=5)
           {
               $('#top-result').append('<span id="no-prize"> INCORRECT! -$200!</span>');
               $RoundOneEarnings -= 200;
           }
           if (($('input').val()==!$correct_answer_1 || !$correct_answer_2 || !$correct_answer_3) && $elapsed_time>5)
           {
               $('#top-result').append('<span id="no-prize"> INCORRECT! -$200!</span>');
               $RoundOneEarnings -= 200;
           }
           $('#top-current-prize-earnings').text('Your current prize earnings are now: $'+ $RoundOneEarnings);
        };
        $(this).attr("id","clue_whichPresident").text("\"FATHER\" OF THE U.S. CONSTITUTION");
        $('#top-response-container').html('<form>RESPONSE: '+'<input type="text"></input>'+'</form>');
        $('input').focus();
        var $start_time=new Date().getSeconds();
        $('#top-response-container').on("blur","input",inputProcessing);

    if (eventTarget.id=='20')
    {
        function inputProcessing(e)
        {
            var $end_time=e.timeStamp;
            var $end_time_converted=$end_time/1000 |0;
            var $elapsed_time=($end_time_converted-$start_time)*(-1)*(1/10) |0;
            if ($elapsed_time<=1)
            {
                $('#top-result').text('Elapsed time: '+$elapsed_time+' second;');
            }
            else
            {
                $('#top-result').text('Elapsed time: '+$elapsed_time+' seconds;');
            }
            var $correct_answer_1='PRESIDENT JOHN ADAMS'
              , $correct_answer_2='PRESIDENT ADAMS'
              , $correct_answer_3='JOHN ADAMS';
            if (($('input').val()==$correct_answer_1 || $correct_answer_2 || $correct_answer_3) && $elapsed_time<=5)
            {
               $('#top-result').append('<span id="prize"> CORRECT AND WITHIN TIME LIMIT! +$400!</span>');
               $RoundOneEarnings += 400;
            }
            if (($('input').val()==$correct_answer_1 || $correct_answer_2 || $correct_answer_3) && $elapsed_time>5)
            {
               $('#top-result').append('<span id="no-prize"> CORRECT BUT EXCEEDED TIME LIMIT! -$400!</span>');
               $RoundOneEarnings -= 400;
            }
           if (($('input').val()==!$correct_answer_1 || !$correct_answer_2 || !$correct_answer_3) && $elapsed_time<=5)
           {
               $('#top-result').append('<span id="no-prize"> INCORRECT! -$400!</span>');
               $RoundOneEarnings -= 400;
           }
           if (($('input').val()==!$correct_answer_1 || !$correct_answer_2 || !$correct_answer_3) && $elapsed_time>5)
           {
               $('#top-result').append('<span id="no-prize"> INCORRECT! -$400!</span>');
               $RoundOneEarnings -= 400;
           }
           $('#top-current-prize-earnings').text('Your current prize earnings are now: $'+ $RoundOneEarnings);
        };
        $(this).attr("id","clue_whichPresident").text("MIDNIGHT APPOINTMENTS");
        $('#top-response-container').html('<form>RESPONSE: '+'<input type="text"></input>'+'</form>');
        $('input').focus();
        var $start_time=new Date().getSeconds();
        $('#top-response-container').on("blur","input",inputProcessing);
    }
    }