James decides to make a bathtub full of jello.  For every pound of water, you need 1.5 tablespoons of jello mix.  The bathtub can hold 6 cubic feet of water.  Each cubic foot of water is 7.5 gallons.  A gallon of water weighs 8 pounds.  A tablespoon of jello mix costs $0.50.  How much did he spend to fill his tub?
The tub has 6*7.5=
<gadget id="calculator">6*7.5</gadget>
<output>45</output>
45 gallons.
That would weigh 45*8=
<gadget id="calculator">45*8</gadget>
<output>360</output>
360 pounds.
So he needs 360*1.5=
<gadget id="calculator">360*1.5</gadget>
<output>540</output>
540 tablespoons of jello mix.
So he spent 540*.5=$
<gadget id="calculator">540*.5</gadget>
<output>270</output>
270.

<result>270</result>