A 100-page story book, Xiao Fei reads 40 pages every day, how much does he read this book in four days (score)
一本100页的故事书，小飞每天看40页，他四天看这本书的多少(分数)
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) * 4</gadget>
<output>8/5 = around 1.6</output>

<result>8/5 = around 1.6</result>