The annual sales of a certain computer city are: 35% in the first quarter, 17% in the second quarter, 23% in the third quarter, and 25% in the fourth quarter. It is known that this computer city sold an average of 104 units per month in the first half of last year, so how many units did this computer city sell last year?
某电脑城一年销售情况是：第一季度是35%，第二季度17%，第三季度是23%，第四季度是25%．已知这个电脑城去年上半年平均每月销售104台，那么这个电脑城去年总销售是多少台？
<gadget id="calculator">35 / 100</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">17 / 100</gadget>
<output>17/100 = around 0.17</output>

<gadget id="calculator">(7/20) + (17/100)</gadget>
<output>13/25 = around 0.52</output>

<gadget id="calculator">6 / (13/25)</gadget>
<output>150/13 = around 11.538462</output>

<gadget id="calculator">104 * (150/13)</gadget>
<output>1_200</output>

<result>1_200</result>