The mass of an astronaut on the moon is 12 kilograms, and his weight on the earth is 6 times that on the moon. How many kilograms is he heavier on the earth than on the moon?
一位宇航员在月球上的质量是12千克，他在地球上的重量是月球上的6倍，他在地球上比月球上重多少千克？
<gadget id="calculator">12 * 6</gadget>
<output>72</output>

<gadget id="calculator">72 - 12</gadget>
<output>60</output>

<result>60</result>