the difference is 10 miles
Write as a multiplication sentence.
5/6 divided by 1 1/2
Remember that
1 1/2=1+1/2=3/2
so
Make them both improper fractions.
77/10 - 19/5
Give them common denominators (multiply the second fraction by 2)
77/10 - 38/10
Subtract
39/10 = 3 9/10