The ratio of refrigerators to color TVs shipped from a store is 3:5. After a period of time, the ratio of refrigerators to color TVs sold is 3:7. As a result, the remaining two types of electrical appliances in the store are 60 sets. The original color TVs are how many.
某商店运来的冰箱与彩电的比是3：5，经过一段时间后，卖出的冰箱与彩电之比是3：7，结果商店剩下的两种电器都是60台，原来的彩电有多少台．
<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">(3/7) * 60</gadget>
<output>180/7 = around 25.714286</output>

<gadget id="calculator">60 - (180/7)</gadget>
<output>240/7 = around 34.285714</output>

<gadget id="calculator">(3/7) * 5</gadget>
<output>15/7 = around 2.142857</output>

<gadget id="calculator">3 - (15/7)</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">(240/7) / (6/7)</gadget>
<output>40</output>

<gadget id="calculator">5 * 40</gadget>
<output>200</output>

<result>200</result>