For a 200-page storybook, Xiao Ming starts from page 1. After reading a few on the first day, he should start from page 31 on the second day. Then Xiao Ming read the book ((())/(())) on the first day.
一本书200页的故事书，小明从第1页看起，第一天看了一些后，第二天应从第31页看起．那么小明第一天看了这本书的((())/(()))．
<gadget id="calculator">31 - 1</gadget>
<output>30</output>

<gadget id="calculator">30 / 200</gadget>
<output>3/20 = around 0.15</output>

<result>3/20 = around 0.15</result>