A car can transport 3 tons at a time, and a tractor can transport 2000 kg at a time. Who has the bigger load? How big is it?
一辆汽车一次能运货3吨，一辆拖拉机一次能运货2000千克．谁的载重量大？大多少？
<gadget id="calculator">3 * 1_000</gadget>
<output>3_000</output>

<gadget id="calculator">3_000 - 2_000</gadget>
<output>1_000</output>

<result>1_000</result>