An object weighing 1 kg on the earth weighs only (1/6) kg on the moon. A classmate weighs 36 kilograms. If he goes to the moon, how much lighter will his weight be than on the earth?
地球上重1千克的物体，在月球上只有(1/6)千克重．一个同学体重36千克，如果到月球上，他的体重比在地球上轻多少千克？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/6) / 1</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">36 * (1/6)</gadget>
<output>6</output>

<gadget id="calculator">36 - 6</gadget>
<output>30</output>

<result>30</result>