Brass is an alloy of copper and zinc. The copper content is 68%. A piece of brass contains 16 kilograms of zinc. How many kilograms does this piece of brass weigh?
黄铜是铜和锌的合金，其中铜的含量是68%，一块黄铜里含锌16千克，这块黄铜重多少千克？
<gadget id="calculator">68 / 100</gadget>
<output>17/25 = around 0.68</output>

<gadget id="calculator">1 - (17/25)</gadget>
<output>8/25 = around 0.32</output>

<gadget id="calculator">16 / (8/25)</gadget>
<output>50</output>

<result>50</result>