A kind of concrete, the ratio of cement, sand and gravel is 2:3:5, to mix 2000 kg of such concrete, how many kilograms of cement, sand and gravel are needed?
一种混凝土，水泥、沙子和石子的比是2：3：5，要搅拌2000千克这样的混凝土，需要水泥、沙子和石子各多少千克？
<gadget id="calculator">2 + 3 + 5</gadget>
<output>10</output>

<gadget id="calculator">2_000 / 10</gadget>
<output>200</output>

<gadget id="calculator">200 * 5</gadget>
<output>1_000</output>

<result>1_000</result>