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

### Instruction:
Keanu's motorcycle can store 8 liters of gasoline. If his destination is 280 miles away and his motorcycle consumes 8 liters of gasoline per 40 miles, how many times does Keanu have to refill his motorcycle with gasoline if he will make a round trip?

### Response:
 Jumla ya maili kwa safari ya kwenda na kurudi ni 280 x 2 = <<280*2=560>>560.
Hivyo, anahitaji kujaza pikipiki yake 560/40 = <<560/40=14>>14 mara.