Xiao Ming reads a 120-page popular science book. He reads 30% of the book on the first day and the rest (2/7) on the second day. How many pages did he read on the first day?
小明看一本120页的科普书，第一天看了全书的30%，第二天看了剩下的(2/7)，第一天看了多少页？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">120 * (3/10)</gadget>
<output>36</output>

<result>36</result>