A manuscript, Xiao Ming has entered (5/6) of this manuscript, exactly 2500 words. How many words are there in this manuscript? (solution by equation)
一份稿件，小明已经录入了这份稿件的(5/6)，正好是2500字．这份稿件共有多少字？(用方程解)
<gadget id="calculator">6 / 5</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">2_500 * (6/5)</gadget>
<output>3_000</output>

<result>3_000</result>