The school cafeteria plans to use 400 kg of coal per day. Actually saved (1/8) every day. How many kilograms are actually saved per day?
学校餐厅计划每天用煤400千克．实际每天节约了(1/8)．实际每天节约多少千克？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">400 * (1/8)</gadget>
<output>50</output>

<result>50</result>