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

### Instruction:
Bob was creating a math test for an online platform.  He created 13 questions in the first hour.  Bob then doubled his rate for the second hour, and doubled his second hour rate for the third hour.  How many questions did Bob create in the three hours?

### Response:
 ชั่วโมงแรก: 13 ข้อ
ชั่วโมงที่สอง: 13(2)=26 ข้อ
ชั่วโมงที่สาม: 26(2)=52 ข้อ
รวม: 13+26+52=<<13+26+52=91>>91 ข้อ