1=1^3
8=2^3
27=3^3
64=4^3
125=5^3
These are all perfect cubes. 1^3 is the same as 1*1*1. The question is asking you to find which number, when multiplied by itself 3 times results in the given number.
Buy 88 more boxes? erm 44 over 1313
1313x3=3939
44x3=122
122-44=88 so u need 88 more boxes