Mr. Zhang copied a manuscript. The number of words already copied is the number of words that have not been copied (2/7). If another 3060 words are copied, the number of words that have been copied is the number of words that have not been copied (3/2). How many words are there in this manuscript? ?
张老师抄一份稿件，已抄的字数是未抄字数的(2/7)，如果再抄3060个字，已抄字数是未抄字数的(3/2)，这篇稿件共有多少个字？
<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">2 + 7</gadget>
<output>9</output>

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">(3/5) - (2/9)</gadget>
<output>17/45 = around 0.377778</output>

<gadget id="calculator">3_060 / (17/45)</gadget>
<output>8_100</output>

<result>8_100</result>