Darrel has 76 quarters, 85 dimes, 20 nickels and 150 pennies.  If he drops all of his money into a coin-counting machine, they will convert his change into dollars for a 10% fee.  How much will he receive after the 10% fee?
He has 76 quarters so that's 76*.25 = $
<gadget id="calculator">76*.25</gadget>
<output>19</output>
19.00.
He has 85 dimes so that's 85*.10 = $
<gadget id="calculator">85*.10</gadget>
<output>8.5</output>
8.50.
He has 20 nickels so that's 20*.05 = $
<gadget id="calculator">20*.05</gadget>
<output>1</output>
1.00.
He has 150 pennies so that's 150*.01 = $
<gadget id="calculator">150*.01</gadget>
<output>1.5</output>
1.50.
All total he has 19+8.5+1+1.5 = $
<gadget id="calculator">19+8.5+1+1.5</gadget>
<output>30</output>
30.00.
They charge a 10% fee to count and convert his change into dollars so they will charge him .10*30 = $3.00.
He had $30.00 and they charged him $3.00 in fees so he now has 30-3 = $
<gadget id="calculator">30-3</gadget>
<output>27</output>
27.00.

<result>27</result>