The master and apprentice work together to process a batch of parts, and the task is completed after 3 hours. The master processes 150 parts per hour, and the number of parts processed by the apprentice per hour is the master's (2/5). How many parts are processed by the apprentice?
师徒两人共同加工一批零件，3小时后完成任务，师傅每小时加工150个零件，徒弟每小时加工零件的个数是师傅的(2/5)，徒弟共加工零件多少个？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">150 * (2/5) * 3</gadget>
<output>180</output>

<result>180</result>