Jim decides to open up a bike shop.  The most common repair he does is fixing bike tires.  He charges $20 for this and it cost him $5 in parts.  In one month Jim does 300 of these repairs.  He also does 2 more complex repairs for $300 each and cost $50 in parts.  He also sells $2000 profit worth of things from his retail shop.  If rent and other fixed expense for the shop is $4000 a month how much profit did the shop make?
From each tire repair, he made 20-5=$
<gadget id="calculator">20-5</gadget>
<output>15</output>
15 profit.
So repairs made him a profit of 15*300=$
<gadget id="calculator">15*300</gadget>
<output>4_500</output>
4500.
The two complex repairs each made him 300-50=$
<gadget id="calculator">300-50</gadget>
<output>250</output>
250 profit.
So those added 250*2=$
<gadget id="calculator">250*2</gadget>
<output>500</output>
500.
So his total profit from everything was 4500+500+2000=$
<gadget id="calculator">4500+500+2000</gadget>
<output>7_000</output>
7000.
So he made a profit of 7000-4000=$
<gadget id="calculator">7000-4000</gadget>
<output>3_000</output>
3000.

<result>3_000</result>