A box holds 2 dozen doughnuts. If the family ate 8 doughnuts, how many doughnuts are left?
Two dozens of doughnuts are equal to 2 x 12 = 
<gadget id="calculator">2*12</gadget>
<output>24</output>
24 doughnuts.
Since 8 doughnuts were eaten, therefore 24 - 8 = 
<gadget id="calculator">24-8</gadget>
<output>16</output>
16 doughnuts are left.

<result>16</result>