5 tons of cement were transported to the construction site, and 3200 kilograms were used. How many kilograms are left?
工地上运来5吨水泥，用去3200千克，还剩多少千克？
<gadget id="calculator">5 * 1_000</gadget>
<output>5_000</output>

<gadget id="calculator">5_000 - 3_200</gadget>
<output>1_800</output>

<result>1_800</result>