The garment factory processed a batch of school uniforms for the school. The original plan was to process 30 sets per day, which took 16 days to complete. Actually process 40 sets per day, how many days to finish?
服装厂为学校加工一批校服，原计划每天加工30套，16天完成．实际每天加工40套，几天完成？
<gadget id="calculator">16 / 40</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">30 * (2/5)</gadget>
<output>12</output>

<result>12</result>