The garment factory wants to produce a batch of school uniforms. The number of sets completed in the first week is (1/5) of the total number of sets. If another 240 sets are produced, (1/3) of the total number of sets is completed. How many sets of this batch of school uniforms are there?
服装厂要生产一批校服，第一周完成的套数是总套数的(1/5)，如果再生产240套，就完成了总套数的(1/3)，求这批校服共有多少套？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/3) - (1/5)</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">240 / (2/15)</gadget>
<output>1_800</output>

<result>1_800</result>