Vince can staple 30 reports every 15 minutes.  If he was stapling reports from 8:00 AM until 11:00 PM, how many reports did he staple altogether?
In one hour, there are 60 / 15 = 
<gadget id="calculator">60/15</gadget>
<output>4</output>
4 (15 minutes).
From 8am - 11am, there are 11 - 8 = 
<gadget id="calculator">11-8</gadget>
<output>3</output>
3 hours.
In 3 hours, there are 3 x 4 = 
<gadget id="calculator">3*4</gadget>
<output>12</output>
12 (15 minutes).
In those 3 hours, Vince stapled 12 x 30 = 
<gadget id="calculator">12*30</gadget>
<output>360</output>
360 reports.

<result>360</result>