A master worker is going to process 279 parts. 47 were processed on the first day, and 52 were processed on the second day. The rest will be processed in 3 days, how many pieces are processed on average per day?
某工人师傅准备加工279个零件．第一天加工47个，第二天加工52个．剩下的要3天加工完，平均每天加工多少个？
<gadget id="calculator">279 - 47 - 52</gadget>
<output>180</output>

<gadget id="calculator">180 / 3</gadget>
<output>60</output>

<result>60</result>