Answer: 26
Explanation: 1 5/8 is equal to 13/8. 8/8 is equal to 1, and 8 plus 5 is 13. 13/8 is an improper fraction, but we will change that later. Since there are sixteen boxes, we must do 13/8 times 16, which is 208/8 if we do the math. 208 divided by 8 is 26.