Difference between 83rd and 59th entries in a sequence

[manishofficial4378]

How to solve this question?

[iori.yagami]

Ans is 0,
You can solve
1x1
2x2
3x3
5x5
8x8
13x13
21x21
34x34

So the 59th and 83rd number is fall in 34
1+2+3+5+8+13+21+34…
So
34-34=0