A person paid 50 yuan for a purchase. The salesperson misread the decimal point of the product price by one digit and gave the customer 45.75 yuan. The customer said that the money was too much. What is the correct price of this product?
某人买东西付了50元钱，营业员将商品价格的小数点看错了一位，找给顾客45.75元，顾客说钱找多了，这件商品的正确标价是多少元
<result>42.5</result>