12345678910111213141516171819202122..... we have
9 digits in 0 to 9
90*2= 180 digits in 10 to 99
900*3= 2700 digits in 100 to 999
so till here we have 9+180+2700= 2889 digits
remaining digits 28383-2889 = 25494
here we have 4 digits number so
25494/4 == 6373 + 2
1000 ==== 1st
1001 ==== 2nd {{{ 2nd + 999 }}}
7373 ======6374th {{{ 6374 + 999}}}
hence 2nd digit of 6374th number , ie 7373 , is 3
so 3 is the answer