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

### Instruction:
Mark gets a new phone plan that is 30% more expensive than his old plan.  If his old plan was $150 a month how much does his new plan cost?

### Response:
 แผนใหม่ของเขาแพงขึ้น 150 * 0.3 = $<<150*.3=45>>45 มากกว่าแผนเก่าของเขา
ดังนั้นแผนใหม่ของเขาคือ 150 + 45 = $<<150+45=195>>195