Xiao Ming reads a story book, reads 60 pages a day, and reads (2/5) of this book in 2 days. According to this calculation, how many days will he have to read the remaining pages?
小明看一本故事书，每天看60页，2天看了这本书的(2/5)，照这样计算，余下的页数还要看多少天？
<gadget id="calculator">60 * 2</gadget>
<output>120</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">120 / (2/5)</gadget>
<output>300</output>

<gadget id="calculator">300 - 120</gadget>
<output>180</output>

<gadget id="calculator">180 / 60</gadget>
<output>3</output>

<result>3</result>