Tommy has a flag that is 5 feet wide and 4 feet tall. He wants to paint it with a new design. He knows from experience that he needs to paint both sides. Paint costs $2 a quart and a quart is good for 4 square feet. How much does he spend on paint?
Each side of the flag is 20 square feet because 5 x 4 = 
<gadget id="calculator">5*4</gadget>
<output>20</output>
20.
Both side total to 40 square feet because 2 x 20 = 
<gadget id="calculator">2*20</gadget>
<output>40</output>
40.
He will need 10 quarts because 40 / 4 = 
<gadget id="calculator">40/4</gadget>
<output>10</output>
10.
This will cost $20 because 10 x 2 = 
<gadget id="calculator">10*2</gadget>
<output>20</output>
20.

<result>20</result>