Master Zhang processes 42 parts every day, which is 2/5 more than his apprentices. How many parts can the master and apprentice process in one day?
张师傅每天加工42个零件，比徒弟每天多加工(2/5)．师徒二人一天一共能加工零件多少个？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 + (2/5)</gadget>
<output>7/5 = around 1.4</output>

<gadget id="calculator">42 / (7/5)</gadget>
<output>30</output>

<gadget id="calculator">30 + 42</gadget>
<output>72</output>

<result>72</result>