The price of a coat is 78, and the price of trousers is three times that of the coat. How much is the total cost of this suit?
一件上衣的价钱是78，裤子的价钱是上衣的3倍，这套衣服一共要多少元．
<gadget id="calculator">78 * 3</gadget>
<output>234</output>

<gadget id="calculator">234 + 78</gadget>
<output>312</output>

<result>312</result>