A stationery factory produced 486 pieces of stationery in 3 days, and two workshops participated in the production. On average, how many pieces of documents were produced by each workshop per day? (answer in two ways)
一个文具厂3天生产了486件文具，有两个车间参与生产，平均每个车间每天生产多少件文件？(用两种方法解答)
<gadget id="calculator">486 / 3 / 2</gadget>
<output>81</output>

<result>81</result>