The master makes 126 parts per hour, and the number of parts processed by the apprentice per hour is exactly half of that of the master. How many parts did the master and apprentice process in total per hour?
师傅每小时126个零件，徒弟每小时加工的零件个数正好是师傅的一半．师徒俩每小时一共加工多少个零件？
<gadget id="calculator">126 / 2</gadget>
<output>63</output>

<gadget id="calculator">63 + 126</gadget>
<output>189</output>

<result>189</result>