Uncle Zhang took a fancy to a Skyworth color TV in Suning Appliance. This color TV can enjoy the national policy of "home appliances to the countryside", with a 13% discount. At the same time, he can also participate in the "old for new" activity (an old TV can be worth 400 yuan) ． Uncle Zhang exchanged an old color TV for a new one, and spent a total of 1688 yuan. How much is the original price of this color TV?
张叔叔在苏宁电器看中一款创维彩电，这款彩电可享受国家的"家电下乡"的政策，优惠13%，同时还可参加"以旧换新"的活动(一台旧电视可抵400元)．张叔叔用一台旧彩电，换回了一台新彩电，共花去了1688元．求这台彩电的原价是多少元？
<gadget id="calculator">1_688 + 400</gadget>
<output>2_088</output>

<gadget id="calculator">13 / 100</gadget>
<output>13/100 = around 0.13</output>

<gadget id="calculator">1 - (13/100)</gadget>
<output>87/100 = around 0.87</output>

<gadget id="calculator">2_088 / (87/100)</gadget>
<output>2_400</output>

<result>2_400</result>