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

### Instruction:
John raises butterflies.  He has 4 jars of 10 caterpillars each.  40% of them fail to become butterflies, but the rest become caterpillars.    He sells the butterflies for $3 each.  How much money does he make?

### Response:
 Ana vikombe 4*10=<<4*10=40>>40 vya vipepeo.
40*.4=<<40*.4=16>>16 hushindwa kuwa vipepeo.
Hivyo ana vipepeo 40-16=<<40-16=24>>24.
Hivyo anapata 24*3=$<<24*3=72>>72.