A small theater company sells tickets to a show.  They have a 400 seat theater and fill to 80% capacity.  Each ticket cost $30.  They repeated the same performance 2 other days.  How much did they make?
They sold 400*.8=
<gadget id="calculator">400*.8</gadget>
<output>320</output>
320 tickets each day.
So each day they made 320*30=$
<gadget id="calculator">320*30</gadget>
<output>9_600</output>
9600.
They did 2+1=
<gadget id="calculator">2+1</gadget>
<output>3</output>
3 days.
So they made 9600*3=$
<gadget id="calculator">9600*3</gadget>
<output>28_800</output>
28,800.

<result>28_800</result>