Since 1 kilogram = 1000 grams, 1 gram = (1/1000) kilograms. Then, 1 meter = 100 centimeters, so 3 centimeters = ((())/(())) meters.
因为1千克=1000克，所以1克=(1/1000)千克．那麽，1米=100厘米，所以3厘米=((())/(()))米．
<gadget id="calculator">3 / 100</gadget>
<output>3/100 = around 0.03</output>

<result>3/100 = around 0.03</result>