There is a story book, I read the whole book (2/5) on the first day, and I read more (1/5) than the first day on the second day, 16 pages more. How many pages does this storybook have?
有一本故事书，第一天看了全书的(2/5)，第二天看的比第一天多看(1/5)，多16页．这本故事书一共有多少页？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(2/5) * (1/5)</gadget>
<output>2/25 = around 0.08</output>

<gadget id="calculator">16 / (2/25)</gadget>
<output>200</output>

<result>200</result>