Brass is an alloy of copper and zinc. The ratio of copper to zinc is 17:8. A piece of brass weighs 150 kilograms. How many kilograms of zinc is contained in it?
黄铜是铜和锌的合金，其中铜和锌的含量比是17：8，现有一块黄铜重150千克，含锌多少千克？
<gadget id="calculator">17 + 8</gadget>
<output>25</output>

<gadget id="calculator">8 / 25</gadget>
<output>8/25 = around 0.32</output>

<gadget id="calculator">150 * (8/25)</gadget>
<output>48</output>

<result>48</result>