Xiaogang reads a story book, reads 1/5 of the whole book on the first day, and reads 60% of the whole book on the second day, and reads 60 pages less on the first day than on the second day. How many pages does this storybook have?
小刚看一本故事书，第一天看了全书的(1/5)，第二天看了全书的60%，第一天比第二天少看了60页．这本故事书共有多少页？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

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

<gadget id="calculator">(3/5) - (1/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">60 / (2/5)</gadget>
<output>150</output>

<result>150</result>