In the 100-meter race, Xiao Ming's time was reduced from 16 seconds to 14 seconds, and Xiao Ming's speed increased by ((())/(())).
百米赛跑中，小明的成绩由原来的16秒减少到14秒，小明速度提高了((())/(()))．
<gadget id="calculator">1 / 14</gadget>
<output>1/14 = around 0.071429</output>

<gadget id="calculator">1 / 16</gadget>
<output>1/16 = around 0.0625</output>

<gadget id="calculator">(1/14) - (1/16)</gadget>
<output>1/112 = around 0.008929</output>

<gadget id="calculator">(1/112) / (1/16)</gadget>
<output>1/7 = around 0.142857</output>

<result>1/7 = around 0.142857</result>