Datatable order by number

Datatable order by number

Hi , i have a datatable with one field as this :
1 of 01-10-2017
2 of 01-10-2017
3 of 01-10-2017
4 of 01-10-2017
5 of 01-10-2017
6 of 01-10-2017
7 of 01-10-2017
8 of 01-10-2017
9 of 01-10-2017
10 of 01-10-2017
11 of 01-10-2017

if i click to sort , the 10 and 11 are after 1 ther's a way to ordinate numerically ?