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

### Instruction:
Mark needs to replace the radiator in his car.  The work takes 2 hours and the mechanic charges $75 an hour.  The part cost $150.  How much did he pay?

### Response:
The mechanic charges $75 per hour, so the work costs $75 * 2 = $<<75*2=150>>150.
The part costs $150, so the total cost is $150 + $150 = $<<150+150=300>>300.
#### 300

