It takes 2.5 hours to groom a dog and 0.5 hours to groom a cat. What is the number of minutes it takes to groom 5 dogs and 3 cats?
2.5 * 5 = 
<gadget id="calculator">2.5*5</gadget>
<output>12.5</output>
12.5 hours
0.5 * 3 = 
<gadget id="calculator">3*0.5</gadget>
<output>1.5</output>
1.5 hours
12.5 + 1.5 hours = 
<gadget id="calculator">12.5+1.5</gadget>
<output>14</output>
14 hours
14 hours = 14 * 60 = 
<gadget id="calculator">14*60</gadget>
<output>840</output>
840 minutes.
It would take 840 minutes to groom 5 dogs and 3 cats.

<result>840</result>