Pat is hunting for sharks to take photos. For every photo he takes he earns $15. He sees a shark about every 10 minutes. His boat fuel costs $50 an hour. If he shark hunts for 5 hours, how much money can he expect to make in profit?
He will use $250 in fuel because 5 x 50 = 
<gadget id="calculator">5*50</gadget>
<output>250</output>
250.
He will be shark hunting for 300 minutes because 5 x 60 = 
<gadget id="calculator">5*60</gadget>
<output>300</output>
300.
He can expect to see 30 sharks because 300 / 10 = 
<gadget id="calculator">300/10</gadget>
<output>30</output>
30.
He will make $450 off these photos because 30 x 15 = 
<gadget id="calculator">30*15</gadget>
<output>450</output>
450.
He will make $200 in profit because 450 - 250 = 
<gadget id="calculator">450-250</gadget>
<output>200</output>
200.

<result>200</result>