There are 12 kilograms of clothes, a total of 9 spoons of washing powder are needed, how many spoons of washing powder are used per kilogram of clothes on average.
现有12千克的衣物，一共需要放9勺洗衣粉，平均每千克衣物用多少勺洗衣粉．
<gadget id="calculator">9 / 12</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>