8 tons of cement were transported to the construction site, and 5400 kilograms were used. How many kilograms are left?
工地上运来8吨水泥，用去5400千克，还剩多少千克？
<gadget id="calculator">8 * 1_000</gadget>
<output>8_000</output>

<gadget id="calculator">8_000 - 5_400</gadget>
<output>2_600</output>

<result>2_600</result>