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

### Instruction:
Marion’s bike cost $356. Stephanie’s bike is worth twice as much. What is the total price of their bikes?

### Response:
Stephanie's bike is worth $356 * 2 = $<<356*2=712>>712.
So, their bikes are worth a total of $356 + $712 = $<<356+712=1068>>1068.
#### 1068