Xiao Ming plans to read a 200-page book in 20 days. So how much did he read this book in 5 days?
一本200页的书，小明计划20天看完．那么他5天看了这本书的多少
<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">(1/20) * 5</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>