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

### Instruction:
Derek finally gets his own allowance. He puts $2 away in January, $4 away in February, $8 away in March, $16 away in April and follows this savings pattern through to December. How much money does he have to spare and save by December?

### Response:
 Kuanzia na $2 mwezi wa Januari, kuzidisha mara mbili mwezi wa Februari, kuzidisha mara mbili tena mwezi wa Machi, na kadhalika, inapelekea jumla ya $2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 = $4096 ifikapo Desemba.