In a piece of alloy, the ratio of copper and zinc is 2:3, now add 6 grams of zinc, a total of 36 grams of new alloy. Find the weight of zinc in the new alloy.
一块合金内，铜和锌的比是2：3，现在再加入6克锌，共得新合金36克．求新合金中锌的重量．
<gadget id="calculator">36 - 6</gadget>
<output>30</output>

<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">30 * (3/5)</gadget>
<output>18</output>

<gadget id="calculator">18 + 6</gadget>
<output>24</output>

<result>24</result>