Toms car gets 50 miles to the gallon.  He drives 75 miles per day.  If gas is $3 per gallon how much does he spend on gas in 10 days?
He drives 75*10=
<gadget id="calculator">75*10</gadget>
<output>750</output>
750 miles.
So he uses 750/50=
<gadget id="calculator">750/50</gadget>
<output>15</output>
15 gallons.
That means he spends 15*3=$
<gadget id="calculator">15*3</gadget>
<output>45</output>
45 on gas.

<result>45</result>