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

### Instruction:
 Pikipiki ya Marion inagharimu $356. Pikipiki ya Stephanie inagharimu mara mbili zaidi. Bei jumla ya pikipiki zao ni kiasi gani?


### Response:
 Pikipiki ya Stephanie inagharimu $356 * 2 = $<<356*2=712>>712.
Hivyo, pikipiki zao zinagharimu jumla ya $356 + $712 = $<<356+712=1068>>1068.