A factory plans to process a batch of parts. On the first day, it processed (1/4) of the planned total number, on the second day it processed more than the first day (1/3), on the third day it processed less than the first day (1/ 3), at this time there are 150 parts left unprocessed, how many parts are planned to be processed?
某厂计划加工一批零件，第一天加工了计划总数的(1/4)，第二天比第一天多加工了(1/3)，第三天比第一天少加工(1/3)，这时还剩下150个零件没有加工，计划加工多少个零件？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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

<gadget id="calculator">1 + (1/3)</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">(1/4) * (4/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(1/4) * (2/3)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 - (1/4) - (1/3) - (1/6)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">150 / (1/4)</gadget>
<output>600</output>

<result>600</result>