The weight of an object on the moon is (1/6) that on the earth. The weight of an astronaut on the earth is 90 kilograms. How many kilograms does he weigh on the moon?
物体在月球上的重量是在地球上的(1/6)，宇航员的在地球上的体重是90千克，他到了月球上的体重是多少千克．
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">90 * (1/6)</gadget>
<output>15</output>

<result>15</result>