Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
A supplier is packing cartons of canned juice. Each carton has 20 cans of juice. Out of the 50 cartons that have been packed, only 40 cartons have been loaded on a truck. How many cans of juice are left to be loaded on the truck?

### Response:
 Kuna masanduku 50 - 40 = <<50-40=10>>10 ya juisi yaliyosalia kwenye lori.
Hii ni sawa na makopo 10 x 20 = <<10*20=200>>200 ya juisi.