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

### Instruction:
Twenty years ago, Shane was 2 times older than Garret is now. If Garret is currently 12, how old is Shane now?

### Response:
 Miaka ishirini iliyopita, Shane alikuwa na umri wa 12 * 2 = <<12*2=24>>24.
Shane ana umri wa miaka 24 + 20 = <<24+20=44>>44 sasa.