Dad spent 0.8 yuan to buy 500 grams of tomatoes, and 2.6 yuan to buy a cabbage. How much did it cost in total?
爸爸买500克西红柿用了0.8元，买一棵白菜用了2.6元．一共用去多少元？
<gadget id="calculator">0.8 + 2.6</gadget>
<output>3.4</output>

<result>3.4</result>