Whenever Katie and her family eat donuts, they need some coffee to dunk them in. She notices that for each donut they need 2 ounces of coffee. Every pot of coffee she makes contains 12 ounces and costs $3 to make. If her family finishes 3 dozen donuts, how much do they spend on coffee?
He family eats 36 donuts because 3 x 12 = 
<gadget id="calculator">3*12</gadget>
<output>36</output>
36.
They need 72 ounces of coffee for these because 2 x 36 = 
<gadget id="calculator">2*36</gadget>
<output>72</output>
72.
This is equal to six pots of coffee because 72 / 12 = 
<gadget id="calculator">72/12</gadget>
<output>6</output>
6.
This will cost $18 to make because 6 x 3 = 
<gadget id="calculator">6*3</gadget>
<output>18</output>
18.

<result>18</result>