The master and the apprentice process a batch of parts. The apprentice processes 16 pieces per hour, which belongs to the master (2/5). When the task is completed, the master processes 12 more parts than the apprentice. How many parts are there in total?
师徒两人加工一批零件，徒弟每小时加工16个，是师傅的(2/5)，完成任务时，师傅比徒弟多加工12个，这批零件共几个？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">16 / (2/5)</gadget>
<output>40</output>

<gadget id="calculator">40 - 16</gadget>
<output>24</output>

<gadget id="calculator">12 / 24</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">16 + 40</gadget>
<output>56</output>

<gadget id="calculator">(1/2) * 56</gadget>
<output>28</output>

<result>28</result>