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

### Instruction:
Bob, a marathon runner, is preparing for a race.  He runs a total of 70 miles in the 3 days leading up to the race. On day one he runs 20 percent of the total miles and on day 2 he runs 50 percent of the remaining miles.  How many miles does he run on day three to complete the 70 miles?

### Response:
 วันที่ 1: 70(0.20)=<<70*0.20=14>>14 ไมล์
70-14=<<70-14=56>>56 ไมล์ที่เหลืออยู่
วันที่ 2: 56/2=<<56/2=28>>28 ไมล์
56-28=<<56-28=28>>28 ไมล์ที่เหลืออยู่