A book has 120 pages in total. Xiao Ming read (1/3) of the whole book on the first day, and the rest (1/2) on the second day. How many pages did he read on the second day?
一本书一共120页，小明第一天看了全书的(1/3)，第二天看了余下的(1/2)，第二天看了多少页？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">120 * (1/2) * (2/3)</gadget>
<output>40</output>

<result>40</result>