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

### Instruction:
Calvin is a bug collector.  In his collection, he has 12 giant roaches, 3 scorpions, half as many crickets as roaches, and twice as many caterpillars as scorpions.  How many insects does Calvin have in his collection?

### Response:
 Kwa nusu ya idadi ya panzi kama kunguru, ana panzi 12/2=<<12/2=6>>6.
Kwa mara mbili ya idadi ya viwavi kama nge, ana viwavi 3*2=<<3*2=6>>6.
Jumla, ana wadudu 12+3+6+6=<<12+3+6+6=27>>27 katika mkusanyiko wake wa wadudu.