The two masters and apprentices work together to make 400 parts. The master made (1/5) 8 more parts than the apprentice (1/4). How many parts did the apprentice make?
师徒二人合作400个零件，师傅做的(1/5)比徒弟做的(1/4)多8个，问徒弟做了多少个零件？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">400 * (1/5)</gadget>
<output>80</output>

<gadget id="calculator">80 - 8</gadget>
<output>72</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/5) + (1/4)</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">72 / (9/20)</gadget>
<output>160</output>

<result>160</result>