Calculate number of inputs where name starts with name^ and input value is>0

I have many inputs with name totalsum1,totalsum2,totalsum3 etc. I need to calculate number of inputs where name starts with "totalsum" and value is >0. I need to send result to another input with id="#rowtotal".

My code:

$("#rowtotal").val(($("input[name^=totalsum]").val>0).size());