There are 480 workers in workshop A and workshop B. Due to work needs, 20% of the workers in workshop A are transferred to workshop B. At this time, the ratio of the number of workers in workshop A to workshop B is 3:5. How many people are there in workshop A?
甲、乙两个车间共有职工480人，因工作需要把甲车间人数的20%调入乙车间，这时甲车间与乙车间人数的比是3：5，原来甲车间有多少人？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(3/8) / (4/5)</gadget>
<output>15/32 = around 0.46875</output>

<gadget id="calculator">480 * (15/32)</gadget>
<output>225</output>

<result>225</result>