A school clothing factory plans to produce 2400 sets of clothing in June, but actually completed the planned (2/5) in the first ten days, completed the planned (1/3) in the middle month, and completed the planned (3/8) in the second ten days. How many sets were overfulfilled in the month?
某校服装厂六月份计划生产服装2400套，实际上旬完成了计划的(2/5)，中月完成了计划的(1/3)，下旬完成了计划的(3/8)，这个厂六月份超额完成了多少套？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

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

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(2/5) + (1/3) + (3/8)</gadget>
<output>133/120 = around 1.108333</output>

<gadget id="calculator">2_400 * (133/120)</gadget>
<output>2_660</output>

<gadget id="calculator">2_660 - 2_400</gadget>
<output>260</output>

<result>260</result>