3,000 kilograms of pears are shipped from the trading market, and 40% of them are sold. How many kilograms are left?
贸易市场运来梨子3000千克，卖出40%，还剩下多少千克？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">3_000 * (2/5)</gadget>
<output>1_200</output>

<gadget id="calculator">3_000 - 1_200</gadget>
<output>1_800</output>

<result>1_800</result>