Li Hua reads a storybook. On the first day, he read 30 pages. On the second day, he read 80% of the pages on the first day, which is 12.5% of the whole book. How many pages does this storybook have?
李华看一本故事书，第一天看了30页，第二天看的页数是第一天的80%，是全书的12.5%，这本故事书一共有多少页？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">12.5 / 100</gadget>
<output>0.125</output>

<gadget id="calculator">(4/5) / 0.125</gadget>
<output>6.4</output>

<gadget id="calculator">30 * 6.4</gadget>
<output>192</output>

<result>192</result>