Jiayou Umbrella Factory rushed to manufacture a batch of tents for the Yushu disaster area in Qinghai. On the first day, (1/5) of this batch of tents was produced, and on the second day (7/20) of the total number of tents were produced. A total of 4400 tents were produced in two days. How many tents were produced on the first day?
佳友伞厂为青海玉树灾区赶制一批帐篷．第一天生产了这批帐篷的(1/5)，第二天生产了总数的(7/20)，两天共生产帐篷4400顶．第一天生产帐篷多少顶？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">7 / 20</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">(1/5) + (7/20)</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">4_400 / (11/20)</gadget>
<output>8_000</output>

<gadget id="calculator">8_000 * (1/5)</gadget>
<output>1_600</output>

<result>1_600</result>