Class 4, Xiaoxiao weighs 31.2 kilograms, and Taotao weighs 30,500 grams. How many kilograms does Xiaoxiao weigh more than Taotao?
四1班笑笑体重31.2千克，淘淘体重30500克，笑笑比淘淘重多少千克．
<gadget id="calculator">30_500 / 1_000</gadget>
<output>61/2 = around 30.5</output>

<gadget id="calculator">31.2 - (61/2)</gadget>
<output>0.7</output>

<result>0.7</result>