The supermarket launched a holiday promotion. My mother bought 3.2 kilograms of hairtail, and the supermarket gave 500 grams of shrimp as a gift. She paid 100 yuan to the salesperson's aunt, and got back 61 yuan and 60 cents. Please calculate the retail price of hairtail in this supermarket.
超市开展节日促销活动，妈妈买了3.2千克带鱼，超市赠送500克小虾，付给售货员阿姨100元钱，找回61元6角．请你算一下这个超市里带鱼的零售价．
<gadget id="calculator">100 - 61.6</gadget>
<output>38.4</output>

<gadget id="calculator">38.4 / 3.2</gadget>
<output>12</output>

<result>12</result>