Step 4: Calculate the result: 63.756 = 60 miles 1 hour 70 - 5.280

We have to solve the following operation:
[tex]\begin{gathered} \frac{63,756\cdot60}{70\cdot5,280}= \\ \frac{63,756\cdot6}{7\cdot5,280}=\frac{382,536}{36,960}=10.35 \end{gathered}[/tex]The result is 10.35 miles/hour.