Hongxing Steelworks used 6,400 kWh of electricity in May, and saved (1/8) in June compared with May. How many tons of steelmaking.
红星炼钢厂，五月份用电6400千瓦•时，六月份比五月份节约了(1/8)，如果每千瓦•时的电可以炼钢(1/8)吨，六月份节约的电可以炼钢多少吨．
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">6_400 * (1/8) * (1/8)</gadget>
<output>100</output>

<result>100</result>