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

[EX Q]: Problem: ( 935421 x 625 ) = ?
[EX A]: 584638125

[EX Q]: Problem: find the least number must be subtracted from 105829 so that remaining no . is divisible by 21 ?
[EX A]: 10

[EX Q]: Problem: you need to unlock a secret code using following clues , can you ? here you have the clues : clue - 1 : 0 7 9 ( one of the numbers is correct and is placed in its correct position ) clue - 2 : 0 3 2 ( nothing is correct ) clue - 3 : 1 0 8 ( two numbers are correct but not placed at its correct position . ) clue - 4 : 9 2 6 ( one number is correct but not placed at its correct position . ) clue - 5 : 6 7 8 ( one number is correct but not placed at its correct position . )
[EX A]:
819