Paul lives in a 5th story apartment.  He makes 3 trips out from and back to his apartment throughout the day each day of a week.  How many feet does he travel vertically in total over the week if each story is 10 feet tall?
Since Paul makes 3 trips per day, and each trip involves going both down and up, this means he travels the full vertical distance of his apartment complex 3*2=
<gadget id="calculator">3*2</gadget>
<output>6</output>
6 times a day.
Since there are 7 days in a week, this means he makes this trip 6*7=42 times a week.
Since each story is 10 feet tall, that means with 5 stories he travels 5*10= 
<gadget id="calculator">5*10</gadget>
<output>50</output>
50 feet each trip.
Since he made 42 trips of 50 feet each, this means he traveled 50*42= 
<gadget id="calculator">50*42</gadget>
<output>2_100</output>
2100 feet in a week.

<result>2_100</result>