There are many CDs in the store. The rock and roll CDs are $5 each, the pop CDs are $10 each, the dance CDs are $3 each, and the country CDs are $7 each. Julia wants to buy 4 of each, but she only has 75 dollars. How much money is she short?
Rock and Roll CDs will be 5*4 = 
<gadget id="calculator">5*4</gadget>
<output>20</output>
20 dollars.
Pop CDs will be 10*4 = 
<gadget id="calculator">10*4</gadget>
<output>40</output>
40 dollars.
Dance CDs will be 3*4 = 
<gadget id="calculator">3*4</gadget>
<output>12</output>
12 dollars.
Country CDs will be 7*4 = 
<gadget id="calculator">7*4</gadget>
<output>28</output>
28 dollars.
In total Julia would need 20+40+12+28 = 
<gadget id="calculator">20+40+12+28</gadget>
<output>100</output>
100 dollars.
Julia is short 100-75 = 
<gadget id="calculator">100-75</gadget>
<output>25</output>
25 dollars.

<result>25</result>