There are 260 color TV sets in the home appliance store. After selling some, there are 115 sets left. How many sets are sold?
家用电器商店有彩色电视机260台，卖出一些后还剩115台，卖出多少台？
<gadget id="calculator">260 - 115</gadget>
<output>145</output>

<result>145</result>