Two people, master and apprentice, produce a batch of parts. The total number (1/3) completed by the apprentice is 5 more. The master makes 17 more parts than the apprentice. How many parts are there in this batch?
师徒2人生产一批零件，徒弟完成总数的(1/3)还多5个，师傅比徒弟多做17个，这批零件有多少个？
<gadget id="calculator">5 + 17 + 5</gadget>
<output>27</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3) - (1/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">27 / (1/3)</gadget>
<output>81</output>

<result>81</result>