Aren’s flight from New York to Hawaii will take 11 hours 20 minutes.  He spends 2 hours reading, 4 hours watching two movies, 30 minutes eating his dinner, 40 minutes listening to the radio, and 1 hour 10 minutes playing games.  How many hours does he have left to take a nap?
The flight from NY to Hawaii will take 60 x 11 + 20 = 
<gadget id="calculator">60*11+20</gadget>
<output>680</output>
680 minutes.
All the activities will take 120 + 240 + 30 + 40 + 70 = 
<gadget id="calculator">120+240+30+40+70</gadget>
<output>500</output>
500 minutes.
For his nap, he has 680 - 500 = 
<gadget id="calculator">680-500</gadget>
<output>180</output>
180 minutes.
To convert minutes to hours, he has 180/ 60 = 
<gadget id="calculator">180/60</gadget>
<output>3</output>
3 hours.

<result>3</result>