The price of a color TV is three times the price of a refrigerator, and buying a color TV costs 2,800 yuan more than buying a refrigerator, so how much is a color TV.
一台彩电的价钱是一台冰箱价钱的3倍，买一台彩电比买一台冰箱多用2800元，那么一台彩电多少元．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">2_800 / 2</gadget>
<output>1_400</output>

<gadget id="calculator">1_400 * 3</gadget>
<output>4_200</output>

<result>4_200</result>