In September, a factory completed the full-month plan by the end of get off work on September 25. If it continues to work like this until the end of the month, how much will the full month be overfulfilled.
一个工厂在九月份的工作中，到9月25日下班时就完成了全月计划，照这样一直工作到月底，全月将超额完成多少．
<gadget id="calculator">30 / 25</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(6/5) - 1</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>