The answer can be calculated with the help of prime factors.The prime factors of 203 is 1, 7, 29 and 203.
203 is evenly divisible by 7 and 29
so,7 children can get 29 apples equally or 29 children can get 7 apples equally.
So, if 7 children are present, each will get 29 apples
if 29 children are present, each will get 7 apples
if 203 children are present, each will get 1 apple