The garment factory planned to produce 1,500 suits in April, but it was completed in the first half of the month (3/5). Based on this calculation, how many suits were produced on average per day in the whole month?
服装厂计划四月份生产西服1500件，结果上半月便完成了(3/5)，照这样计算，全月平均每天超过计划产量多少件？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(3/5) + (3/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">1_500 * (6/5)</gadget>
<output>1_800</output>

<gadget id="calculator">1_800 - 1_500</gadget>
<output>300</output>

<gadget id="calculator">300 / 30</gadget>
<output>10</output>

<result>10</result>