garment factory produces a batch of school uniforms, and the ratio of the number of sets completed in the first 10 days to the total number of sets of this batch of school uniforms is 1:3. If 150 sets are produced again, (2/5) of this batch of school uniforms can be completed. How many sets of school uniforms are there in total?
服装厂生产一批校服，前10天完成的套数与这批校服总套数的比是1：3．如果再生产150套，正好可以完成这批校服的(2/5)．这批校服共有多少套？
<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">(2/5) - (1/3)</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">150 / (1/15)</gadget>
<output>2_250</output>

<result>2_250</result>