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

### Instruction:
Mark loves to see shows in theaters. He decided to visit the theater at least once a week. One performance lasts 3 hours. The price of the ticket depends on the time spent in the theater and stands at $5 for each hour. How much will Mark spend on visits to the theater in 6 weeks?

### Response:
 ราคาการแสดงหนึ่งครั้งคือ 3 * $5 = $<<3*5=15>>15
ใน 6 สัปดาห์ มาร์คจะใช้เงิน $15 * 6 = $<<15*6=90>>90