10 tons of cement are shipped to the construction site, 2 tons are used for the first time, and 2 tons of 500 kg are used for the second time, how many kg are left?
工地运来10吨水泥，第一次用去2吨，第二次用去2吨500千克，还剩多少千克？
<gadget id="calculator">10 * 1_000</gadget>
<output>10_000</output>

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

<gadget id="calculator">10_000 - 2_000 - 2_500</gadget>
<output>5_500</output>

<result>5_500</result>