Shiela is required to submit a 15-page research paper. She already finished writing 1/3 of the paper. How many pages does she have left to write?
Shiela has already written one third of the paper which is 15 pages x 1/3 = 
<gadget id="calculator">15*1/3</gadget>
<output>5</output>
5 pages.
So, she still needs to write 15 pages - 5 pages = 
<gadget id="calculator">15-5</gadget>
<output>10</output>
10 pages.

<result>10</result>