During May Day, the Mianjiang Bookstore had a discount. Xiaofang bought a dictionary with a 20% discount and saved 1 yuan. How much did she actually pay for the dictionary?
五一期间，绵江书店打折，小芳以8折的优惠买了一本字典，节省了1元，那她买这本字典实际付了多少
<gadget id="calculator">0.8 / 0.2</gadget>
<output>4</output>

<result>4</result>