Lance wants to finish reading a 100 page book in 3 days. Yesterday, he started to read 35 pages. Today, he read 5 fewer pages than yesterday. How many pages should he read tomorrow to finish the book?
Lance read 35 - 5 = 
<gadget id="calculator">35-5</gadget>
<output>30</output>
30 pages today.
So he read a total of 35 + 30 = 
<gadget id="calculator">35+30</gadget>
<output>65</output>
65 pages in 2 days.
Thus, he should read 100 - 65 = 
<gadget id="calculator">100-65</gadget>
<output>35</output>
35 pages tomorrow.

<result>35</result>