Xiaogang reads a story book, 45 pages a day, after 5 days, there are still 3/8 of the book left, how many pages does this book have?
小刚看一本故事书，每天看45页，看了5天后，还剩全书的(3/8)没有看，这本书共有多少页？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (3/8)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">5 / (5/8)</gadget>
<output>8</output>

<gadget id="calculator">45 * 8</gadget>
<output>360</output>

<result>360</result>