A supermarket has a "buy four get one free" promotion for a brand of washing powder on weekends. If this washing powder costs 14 yuan per bag, and now you pay 4 bags to buy back 5 bags of washing powder, the average amount of washing powder you buy is How much is it per bag?
一个超市周末对一种牌子的洗衣粉搞"买四赠一"的促销活动，如果这种洗衣粉每袋14元，现在付4袋的钱买回5袋洗衣粉，买回的洗衣粉平均每袋多少元？
<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">14 * (4/5)</gadget>
<output>56/5 = around 11.2</output>

<result>56/5 = around 11.2</result>