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

### Instruction:
 Mmiliki wa duka alibadilisha mafuta yake kwenye chupa za 200 mL. Aliweza kutengeneza chupa 20. Mmiliki wa duka alikuwa na mafuta mangapi?


### Response:
 Chupa 20 za mafuta ni sawa na 200 mL x 20 = <<20*200=4000>>4000 mL.
Kwa kuwa 1 lita ni sawa na 1000 mL, basi mmiliki wa duka alikuwa na awali 4000/1000 = <<4000/1000=4>>4 lita za mafuta.