Tom reads 10 hours over 5 days.  He can read 50 pages per hour.  Assuming he reads the same amount every day how many pages does he read in 7 days?
He reads 10/5=
<gadget id="calculator">10/5</gadget>
<output>2</output>
2 hours per day.
That means he reads 2*50=
<gadget id="calculator">2*50</gadget>
<output>100</output>
100 pages per day.
So he reads 100*7=
<gadget id="calculator">100*7</gadget>
<output>700</output>
700 pages in 7 days.

<result>700</result>