Vlad is 6 feet, 3 inches tall. His younger sister is 2 feet, 10 inches tall. How many inches taller is Vlad than his sister?
Vlad = 6 ft * 12 in/ft + 3 = 
<gadget id="calculator">6*12+3</gadget>
<output>75</output>
75 inches.
Sister = 2 ft * 12 in/ft + 10 = 
<gadget id="calculator">2*12+10</gadget>
<output>34</output>
34 inches
75 - 34 = 
<gadget id="calculator">75-34</gadget>
<output>41</output>
41 inches.
Vlad is 41 inches taller than his sister.

<result>41</result>