Mike was a pen pal with 5 people.  He stopped being penpals with 2 of them.  They each send 2 letters a week that are 5 pages long.  He responds in kind.  He can write a page every 6 minutes.  How many hours does he spend writing a week?
He is penpals with 5-2=
<gadget id="calculator">5-2</gadget>
<output>3</output>
3 people.
Thus he gets 3*2=
<gadget id="calculator">3*2</gadget>
<output>6</output>
6 letters a week.
So he writes 6*5=
<gadget id="calculator">6*5</gadget>
<output>30</output>
30 pages a week.
So he writes for 30*6=
<gadget id="calculator">30*6</gadget>
<output>180</output>
180 minutes a week.
So he writes 180/60=
<gadget id="calculator">180/60</gadget>
<output>3</output>
3 hours a week.

<result>3</result>