A certain factory rushed to produce a batch of tents to support Yushu earthquake relief. On the first day, it produced (1/4) of the total number, and on the second day (3/10) of the total number, a total of 880 tents were produced in two days. How many tents are in this batch?
某厂为支援玉树抗震救灾赶制一批帐篷，第一天生产了总数的(1/4)，第二天生产了总数的(3/10)，两天共生产了880顶．这批帐篷为多少顶？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(1/4) + (3/10)</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">880 / (11/20)</gadget>
<output>1_600</output>

<result>1_600</result>