Dorje reads a story book, read 60 pages on the first day, read less pages (1/5) on the second day than the first day, read 25% of the whole book on the third day, and finished it in three days. How many pages does this storybook have?
多吉看一本故事书，第一天看了60页，第二天看了的页数比第一天少(1/5)，第三天看了全书的25%，三天看完，这本故事书一共有多少页？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">60 * (4/5)</gadget>
<output>48</output>

<gadget id="calculator">60 + 48</gadget>
<output>108</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">108 / (3/4)</gadget>
<output>144</output>

<result>144</result>