Hello!
So we first need to find out how many grapefruits go in each box. To do that I will divide.
264 ÷ 22 = 12
12 grapefruits per box.
180 ÷ 12 = 15
Check:
15 × 12 = 180
This proves us CORRECT!
So, the farmer will need to pack 15 more boxes of grapefruit with 12 grapefruits each.
Hope I helped! :)