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

### Instruction:
Devin teaches one math course per year. He taught Calculus for 4 years, Algebra for twice as many years, and Statistics for 5 times as long as he taught Algebra. How many years has Devin taught?

### Response:
 คณิตศาสตร์เชิงคำนวณ: <<4=4>>4 ปี
พีชคณิต: 4(2)=8 ปี
สถิติ: 8(5)=<<8*5=40>>40 ปี
รวมจำนวนปีที่สอน: 4+8+40=<<4+8+40=52>>52 ปี