John drinks 1.5 gallons of water a day.  How many quarts does he drink a week?
He drinks 1.5*4=
<gadget id="calculator">1.5*4</gadget>
<output>6</output>
6 quarts a day.
That means he drinks 6*7=
<gadget id="calculator">6*7</gadget>
<output>42</output>
42 quarts a week.

<result>42</result>