There is an alloy containing copper and zinc. Copper accounts for 60% of zinc. Now add 8 grams of zinc. At this time, zinc is 75% more than copper. How many grams of zinc is there in the original alloy?
有一块合金，含有铜和锌两种金属，铜占锌的60%，现加入锌8克，这时锌比铜多75%，求原来合金中锌有多少克？
<gadget id="calculator">1.05 - 1</gadget>
<output>0.05</output>

<gadget id="calculator">8 / 0.05</gadget>
<output>160</output>

<result>160</result>