Xiao Ming reads a 105-page book. He reads 30 pages on the first day, and the rest (1/3) on the second day. How many pages are left?
小明看一本105页的书，第一天看了30页，第二天看了剩下的(1/3)，还剩多少页没看？
<gadget id="calculator">105 - 30</gadget>
<output>75</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">75 * (1/3)</gadget>
<output>25</output>

<gadget id="calculator">105 - 30 - 25</gadget>
<output>50</output>

<result>50</result>