A coat is 486 yuan, and its price is three times that of a woolen sweater. How much does it cost to buy a coat and a woolen sweater?
一件大衣486元，它的价钱是一件羊毛衫的3倍，买一件大衣和一件羊毛衫一共多少钱？
<gadget id="calculator">486 / 3</gadget>
<output>162</output>

<gadget id="calculator">486 + 162</gadget>
<output>648</output>

<result>648</result>