A truck needs (3/10) kilograms of oil to travel 1 kilometer, and 10 similar trucks travel 500 kilometers, how many kilograms of oil will be used?
一辆卡车行驶1千米要用油(3/10)千克，10辆同样的卡车行驶500千米，要用油多少千克？
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(3/10) * 500 * 10</gadget>
<output>1_500</output>

<result>1_500</result>