James prints out 2 books.  They are each 600 pages long.  He prints out double-sided and 4 pages per side.  How many sheets of paper does he use?
He printed 600*2=
<gadget id="calculator">600*2</gadget>
<output>1_200</output>
1200 pages.
Each sheet of paper was 4*2=
<gadget id="calculator">4*2</gadget>
<output>8</output>
8 pages.
So he used 1200/8=
<gadget id="calculator">1200/8</gadget>
<output>150</output>
150 sheets of paper.

<result>150</result>