The factory needs to process a batch of parts. The workers process an average of 260 parts per day. After working for 12 days, there are still 150 parts left unfinished. How many parts are there in total?
工厂要加工一批零件，工人们平均每天加工零件260个，工作了12天后，还差150个零件没有加工完毕．问这批零件一共有多少个？
<gadget id="calculator">260 * 12</gadget>
<output>3_120</output>

<gadget id="calculator">3_120 + 150</gadget>
<output>3_270</output>

<result>3_270</result>