Divide the total amount of chocolates by the number of chcolates each box will contain.
234 ÷ 11 = 21.2727272727
It is a repeating decimal. Now, obviously there won't be 21.2727272727 boxes chcolates.
11 × 21 = 231
11 × 22 = 242
If you multiply 11 by 21, you get 231 -- which is 3 less than the total amount of chocolates. But if you multiply it by 22, you get a number that is greater than 234, so it is not possible.
ANSWER:
There will be 21 boxes of chocolates, and 3 left over.
