Tom gets 4 car washes a month.  If each car wash costs $15 how much does he pay in a year?
He gets 4*12=
<gadget id="calculator">4*12</gadget>
<output>48</output>
48 car washes a year.
That means it cost 48*15=$
<gadget id="calculator">48*15</gadget>
<output>720</output>
720.

<result>720</result>