Johnny makes his signature crab dish 40 times a day.  It uses 1.5 pounds of crab meat.  Crab meat sells for $8 per pound.  How much does he spend in a week if he is closed 3 days a week?
He uses 40*1.5=
<gadget id="calculator">40*1.5</gadget>
<output>60</output>
60 pounds of crab meat per day.
That cost 60*8=$
<gadget id="calculator">60*8</gadget>
<output>480</output>
480 per day.
He is open 7-3=
<gadget id="calculator">7-3</gadget>
<output>4</output>
4 days a week.
So he spends 480*4=$
<gadget id="calculator">480*4</gadget>
<output>1_920</output>
1920 a week.

<result>1_920</result>