factory originally had 40 people. Due to the improvement of equipment, it needs to reduce the number of workers by 5. How much is the reduction?
一个工厂原有个人40人，由于提高设备，需要精简工人5名，精简了百分之几？
<gadget id="calculator">5 / 40</gadget>
<output>1/8 = around 0.125</output>

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