A project, A completes it in 4 days (1/2), how much is it completed in 5 days
一项工程，甲做4天完成它的(1/2)，5天完成它的多少
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) / 4</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/8) * 5</gadget>
<output>5/8 = around 0.625</output>

<result>5/8 = around 0.625</result>