The garment factory planned to process 5,400 pieces of clothing in March, but it was completed in the first half of the month (3/4), and in the second half of the month (2/3). How many more pieces were processed this month than originally planned?
服装厂3月份计划加工5400件衣服，结果上半月完成了(3/4)，下半月完成了(2/3)，这个月比原计划多加工多少件？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) - 1</gadget>
<output>-1/3 = around -0.333333</output>

<gadget id="calculator">(3/4) + (-1/3)</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">5_400 * (5/12)</gadget>
<output>2_250</output>

<result>2_250</result>