The task is to generate the correct answer for a given math problem.

[EX Q]: Problem: find the least number must be subtracted from 62575 so that remaining number is divisible by 99 .
[EX A]: 7

[EX Q]: Problem: how many diagonals does a polygon with 13 sides have , if one of its vertices does not connect to any diagonal ?
[EX A]: 54

[EX Q]: Problem: how many words , with or without meaning , can be formed using all letters of the word orange using each letter exactly once ?
[EX A]:
720