A project can be completed by A in 10 days alone, and B can be completed in 8 days by himself, how much less can A do than B in each day?
一项工程，甲单独做10天完成，乙单独做8天完成，甲每天比乙少做多少
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/8) - (1/10)</gadget>
<output>1/40 = around 0.025</output>

<gadget id="calculator">(1/40) / (1/8)</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>