Xiao Ming walked four times along a 50 meter long straight road, 78 steps for the first time, 82 steps for the second time, and 79 steps for the third time, The fourth time is 80 steps. Xiaoming's average step length is about () meters. The number is two decimal places

200 meters in all
78 + 82 + 79 + 80 = 319 steps
200 △ 319 = 0.63M
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