The earthquake in Yushu, Qinghai, which occurred on April 14, 2010, affected the hearts of 1.3 billion people across the country. A certain mineral water manufacturer donated the mineral water produced to the disaster area, and produced 24,000 bottles in 4 days, accounting for (2/5 of the total) ), and how many days can the rest be completed? (I believe you can answer this question in different ways)
2010年4月14日发生的青海玉树大地震牵动了全国13亿人的心，某矿泉水生产厂家将生产的矿泉水捐赠给灾区，4天生产了2.4万瓶，占总数的(2/5)，剩下的能在多少天内完成？(本题相信你能用不同方法解答)
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">2.4 / 4</gadget>
<output>0.6</output>

<gadget id="calculator">2.4 / (2/5) / 0.6</gadget>
<output>10</output>

<gadget id="calculator">10 - 4</gadget>
<output>6</output>

<result>6</result>