Rudy runs 5 miles at a rate of 10 minutes per mile. Later he runs 4 miles at a rate of 9.5 minutes per mile. What is the total length of time that Rudy runs?
Rudy first runs for 5 * 10 = 
<gadget id="calculator">5*10</gadget>
<output>50</output>
50 minutes.
Then Rudy runs for 4 * 9.5 = 
<gadget id="calculator">4*9.5</gadget>
<output>38</output>
38 minutes.
Rudy runs for a total length of 50 + 38 = 
<gadget id="calculator">50+38</gadget>
<output>88</output>
88 minutes.

<result>88</result>