There are two prices for a drink. The unit price of a small bottle is 1.8 yuan, which is 3.2 yuan cheaper than a large bottle. How much is the unit price of a large bottle of drink? (solution by equation)
一种饮料有两种价格，小瓶的单价是1.8元，比大瓶便宜3.2元，大瓶饮料的单价是多少元？(用方程解)
<gadget id="calculator">3.2 + 1.8</gadget>
<output>5</output>

<result>5</result>