After Xiao Ming has been training for a period of time, the time it takes to run 5000 meters is shortened (1/9) compared to the original one, so how much is his speed improved than the original one?
小明进行了一段时间的训练后，跑完5000米所用时间比原来缩短了(1/9)，那么他的速度比原来提高了多少．
<gadget id="calculator">9 - 8</gadget>
<output>1</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<result>1/8 = around 0.125</result>