A movie that's 1.5 hours long is being replayed 6 times in one movie theater each day. There is a 20-minute advertisement before the start of the movie. How long, in hours, does the movie theater operate each day?
The movie that is being replayed 6 times takes 1.5 x 6 = 
<gadget id="calculator">6*1.5</gadget>
<output>9</output>
9 hours.
The advertisements before the start of the movie take 20 x 6 = 
<gadget id="calculator">20*6</gadget>
<output>120</output>
120 minutes in all.
One hundred twenty minutes is equal to 120/60 = 
<gadget id="calculator">120/60</gadget>
<output>2</output>
2 hours.
Thus, the movie theater operates for 9 + 2 = 
<gadget id="calculator">9+2</gadget>
<output>11</output>
11 hours each day.

<result>11</result>