Xiaogang’s mother bought 5 kilograms of grapes today, Xiaogang ate 2000 grams, how many kilograms are left?
小刚妈妈今天买了5千克葡萄，小刚吃了2000克，还剩多少千克？
<gadget id="calculator">2_000 / 1_000</gadget>
<output>2</output>

<gadget id="calculator">5 - 2</gadget>
<output>3</output>

<result>3</result>