A manuscript needs to be typed in 8 hours, and B needs to be completed in 10 hours. How much faster is A's typing speed than B?
打一份稿件，甲要8小时完成，乙要10小时完成，甲的打字速度比乙快多少．
<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) / (1/10)</gadget>
<output>1/4 = around 0.25</output>

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