Lucy works in a pet shop. She can clean 2 aquariums in 3 hours. If Lucy is working 24 hours this week, how many aquariums could she clean?
We know how many aquariums Lucy can clean in a 3-hour increment. This week, Lucy will work for 24 / 3 = 
<gadget id="calculator">24/3</gadget>
<output>8</output>
8 increments.
Lucy can clean 2 aquariums per increment, so she can clean 2 x 8 = 
<gadget id="calculator">2*8</gadget>
<output>16</output>
16 aquariums.

<result>16</result>