Xiao Ming read a 300-page story book (2/5), how many pages did Xiao Ming read?
一本300页的故事书，小明看了(2/5)，小明看了多少页？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">300 * (2/5)</gadget>
<output>120</output>

<result>120</result>