An elephant weighs 6 tons and a cow weighs 400 kilograms. How much does an elephant weigh more than a cow?
一头大象重6吨，一头牛重400千克，一头大象比一头牛重多少千克？
<gadget id="calculator">6 * 1_000</gadget>
<output>6_000</output>

<gadget id="calculator">6_000 - 400</gadget>
<output>5_600</output>

<result>5_600</result>