A Ferris wheel can accommodate 70 people in 20 minutes.  If the Ferris wheel is open from 1:00 pm until 7:00 pm, how many people will get to ride?
The Ferris wheel will be open for 7:00 - 1:00 = 6 hours.
In one hour the wheel can ride 60 minutes / 20 minutes = 
<gadget id="calculator">60/20</gadget>
<output>3</output>
3 times the number of riders.
The total per hour riders is 3 * 70 people = 
<gadget id="calculator">3*70</gadget>
<output>210</output>
210 people.
If the ride is open 6 hours * 210 people = 
<gadget id="calculator">6*210</gadget>
<output>1_260</output>
1260 people can ride.

<result>1_260</result>