A story book has 30 pages, Xiao Ming reads (1/3), Xiao Hong reads (2/5), who reads more? How much?
一本故事书有30页，小明看了(1/3)，小红看了(2/5)，谁看得多？多多少？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">30 * (2/5)</gadget>
<output>12</output>

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

<gadget id="calculator">30 * (1/3)</gadget>
<output>10</output>

<gadget id="calculator">12 - 10</gadget>
<output>2</output>

<result>2</result>