Sam ran 63,756 get in 70 minutes. what is sam's rate in miles per hour? (there are 5,280 feet in one mile

The correct question is
Sam ran 63,756 feet in 70 minutes. What is Sam's rate in miles per hour? (there are 5,280 feet in one mile

we know that
one mile is equal to 5,280 ft
and 
one hour is  equal to 60 minutes
so

step 1
convert ft to miles

63,756/5,280=12.075 miles

step 2
convert minutes to hours
70/60=1.1667 hours

step 3
find the rate in miles/hours
12.075 miles/1.1667 hours=10.35 miles/hour

the answer is
10.35 miles/hour