From A to B, 29% of them are uphill, 21% are downhill, and the rest are on flat roads. Xiao Ming goes back and forth between A and B once, with a total of 609 meters downhill. How many meters are there between A and B?
从甲地到乙地，其中29%是上坡路，21%是下坡路，其余是平路，小明在甲乙两地往返一次，共走下坡路609米，甲乙两地相距多少米？
<gadget id="calculator">609 / 2</gadget>
<output>609/2 = around 304.5</output>

<gadget id="calculator">21 / 100</gadget>
<output>21/100 = around 0.21</output>

<gadget id="calculator">(609/2) / (21/100)</gadget>
<output>1_450</output>

<result>1_450</result>