Xiao Zhang and Xiao Li process a total of 200 parts, of which Xiao Li processes (1/3) more than Xiao Zhang processes (1/4) 20 parts. How many parts does Xiao Zhang process?
小张和小李一共加工零件200个，其中小李加工个数的(1/3)比小张加工个数的(1/4)多20个．小张加工零件多少个．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) * 200</gadget>
<output>50</output>

<gadget id="calculator">50 + 20</gadget>
<output>70</output>

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

<gadget id="calculator">(1/3) + (1/4)</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">70 / (7/12)</gadget>
<output>120</output>

<gadget id="calculator">200 - 120</gadget>
<output>80</output>

<result>80</result>