James makes potatoes for a group.  Each person eats 1.5 pounds of potatoes.  He makes potatoes for 40 people.  A 20-pound bag of potatoes costs $5.  How much does it cost?
He needs 1.5*40=
<gadget id="calculator">1.5*40</gadget>
<output>60</output>
60 pounds of potatoes.
So he needs to buy 60/20=
<gadget id="calculator">60/20</gadget>
<output>3</output>
3 bags of potatoes.
So it cost 3*5=$
<gadget id="calculator">3*5</gadget>
<output>15</output>
15.

<result>15</result>