It takes 40 minutes to freeze ice cubes and 3 minutes per smoothie to turn them into smoothies once they're frozen. How long does it take to make 5 smoothies?
First find the total time spend making the smoothies: 5 smoothies * 3 minutes/smoothie = 
<gadget id="calculator">5*3</gadget>
<output>15</output>
15 minutes.
Then add that amount of time to the time freezing the ice cubes to find the total time spent: 15 minutes + 40 minutes = 
<gadget id="calculator">15+40</gadget>
<output>55</output>
55 minutes.

<result>55</result>