Tim decides to start selling necklaces he makes.  He uses 10 charms to make each necklace.  Each charm cost $15.  He sells the necklace for $200.  How much profit does he make if he sells 30?
Each necklace cost 10*15=$
<gadget id="calculator">10*15</gadget>
<output>150</output>
150 to make.
So he makes a profit of 200-150=$
<gadget id="calculator">200-150</gadget>
<output>50</output>
50 each.
So his total profit is 50*30=$
<gadget id="calculator">50*30</gadget>
<output>1_500</output>
1500.

<result>1_500</result>