Yingchun Agricultural Machinery Factory plans to produce a batch of rice transplanters, and has completed 56% of the plan. If 5040 more units are produced, the total output will exceed 16% of the planned output. So, how many rice transplanters were originally planned to be produced?
迎春农机厂计划生产一批插秧机，现已完成计划的56%，如果再生产5040台，总产量就超过计划产量的16%．那么，原计划生产插秧机多少台？
<gadget id="calculator">16 / 100</gadget>
<output>4/25 = around 0.16</output>

<gadget id="calculator">56 / 100</gadget>
<output>14/25 = around 0.56</output>

<gadget id="calculator">(4/25) - (14/25)</gadget>
<output>-2/5 = around -0.4</output>

<gadget id="calculator">1 + (-2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">5_040 / (3/5)</gadget>
<output>8_400</output>

<result>8_400</result>