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

### Instruction:
Mobius is the fastest mule in Italy.  She can run at a top speed of 13 miles per hour when she is without any load to carry, and she can travel at 11 miles per hour as her top speed when she carries a typical load.  If she travels the 143 miles from Florence, Italy to Rome, Italy at top speed while carrying a typical load, then returns to Florence at her usual top speed without carrying a load, how long, in hours, will the trip take if she takes two 30-minute rest stops during each half of the trip?

### Response:
With a load, at her top speed, she can travel 143 miles in 143 miles / 11 miles per hour = <<143/11=13>>13 hours.
Without a load, at her top speed, she can travel 143 miles in 143 miles / 13 miles per hour = <<143/13=11>>11 hours.
Each leg of the round trip will take 13 hours.
Two 30-minute rest stops during each half of the trip will take 30 minutes * 2 = <<30*2=60>>60 minutes, which is 1 hour.
Thus, the round trip will take 13 hours * 2 = <<13*2=26>>26 hours.
#### 26