my country has a vast territory, with a distance of 5,200 kilometers from east to west. The distance between east and west is 100 meters more than the distance between north and south (51/55). How many kilometers is the distance between north and south?
我国幅员辽阔，东西相距5200千米，东西相距是南北相距的(51/55)还多100米，南北相距多少千米？
<gadget id="calculator">5_200 - 100</gadget>
<output>5_100</output>

<gadget id="calculator">51 / 55</gadget>
<output>51/55 = around 0.927273</output>

<gadget id="calculator">5_100 / (51/55)</gadget>
<output>5_500</output>

<result>5_500</result>