Xiaohong reads a story book. She reads 45 pages on the first day, and the ratio of the number of pages she read to the total number of pages on the second day is 1:4. The number of pages she reads on the second day is exactly 20% more than that on the first day. How many pages does the book have?
小红看一本故事书，第一天看了45页，第二天看的页数与总页数的比是1：4，第二天看的恰好比第一天多20%，这本书一共有多少页？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(6/5) / (1/4)</gadget>
<output>24/5 = around 4.8</output>

<gadget id="calculator">45 * (24/5)</gadget>
<output>216</output>

<result>216</result>