Master Wang made a batch of parts and completed it in 3 hours. After making 125 parts in the first two hours, and 55 parts in the next hour, how many parts does he make per hour on average?
王师傅做一批零件，3小时完成．前两小时共做125个后，后一小时做55个，他平均每小时做多少个零件？
<gadget id="calculator">125 + 55</gadget>
<output>180</output>

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

<result>60</result>