The Nanjing Yangtze River Bridge railway bridge model is 6.772 meters long, and the ratio of its actual length to the model length is about 1000:1. What is the actual length of the railway bridge of Nanjing Yangtze River Bridge?
南京长江大桥铁路桥模型长6.772米，它的实际长度和模型长度的比约是1000：1．南京长江大桥铁路桥实际长度约为多少米？
<gadget id="calculator">1 / 1_000</gadget>
<output>1/1_000 = around 0.001</output>

<gadget id="calculator">6.77 / (1/1_000)</gadget>
<output>6_770</output>

<result>6_770</result>