John assembles computers and sells prebuilt computers as a business. The parts for the computer cost $800.  He sells the computers for 1.4 times the value of the components.  He manages to build 60 computers a month.  He has to pay $5000 a month in rent and another $3000 in non-rent extra expenses a month.  How much profit does he make a month?
He sells each computer for 1.4*800=$
<gadget id="calculator">1.4*800</gadget>
<output>1_120</output>
1120.
That means he makes a profit of 1120-800=$
<gadget id="calculator">1120-800</gadget>
<output>320</output>
320 per computer.
So he makes 320*60=$
<gadget id="calculator">320*60</gadget>
<output>19_200</output>
19200 from selling computers.
He has extra expenses of 5000+3000=$
<gadget id="calculator">5000+3000</gadget>
<output>8_000</output>
8000 a month.
So his profit is 19200-8000=$
<gadget id="calculator">19200-8000</gadget>
<output>11_200</output>
11,200.

<result>11_200</result>