The fruit shop brings in 2 tons of fruit and sells 200 kilograms, how many kilograms are left
水果店运进2吨水果，卖出200千克，还剩多少千克
<gadget id="calculator">2 * 1_000</gadget>
<output>2_000</output>

<gadget id="calculator">2_000 - 200</gadget>
<output>1_800</output>

<result>1_800</result>