Mr. John jogs for 1 hour 30 minutes in the morning every day. How much time (in hours) will he have spent jogging after two weeks?
There are 60 minutes in an hour so 1 hour 30 minutes is equivalent to [1 + (30/60)] hours = 
<gadget id="calculator">1.5</gadget>
<output>1.5</output>
1.5 hours.
There are 7 days in a week so he spends 1.5*7 = 
<gadget id="calculator">7*1.5</gadget>
<output>10.5</output>
10.5 hours jogging every week.
After 2 weeks he will have spent 2*10.5 = 
<gadget id="calculator">2*10.5</gadget>
<output>21</output>
21 hours jogging.

<result>21</result>