Master Zhang needs to produce 600 parts, 120 of which have already been produced, and the rest will take 10 days to complete. How many parts are produced on average per day?
张师傅要生产600个零件，已经生产了120个，剩下的要10天完成，平均每天生产多少个？
<gadget id="calculator">600 - 120</gadget>
<output>480</output>

<gadget id="calculator">480 / 10</gadget>
<output>48</output>

<result>48</result>