Bob orders a dozen muffins a day for $0.75 each and sells them for $1.5 each.  How much profit does he make a week?
He buys them for 12*.75=$
<gadget id="calculator">12*.75</gadget>
<output>9</output>
9.
He sells them for 12*1.5=$
<gadget id="calculator">12*1.5</gadget>
<output>18</output>
18.
So he makes 18-9=$
<gadget id="calculator">18-9</gadget>
<output>9</output>
9 per day.
That means he makes 9*7=$
<gadget id="calculator">9*7</gadget>
<output>63</output>
63 per week.

<result>63</result>