How to get the unweighted score?

[zhimin-z]

$(88.89+80.60+52.63+100)/4 = 80.53$
$(88.89+80.60+52.63)/3 = 74.04$
It seems very unintuitive to get the 78.97 unweighted score from the leaderboards...

[brightmart]

[brightmart]

the unweighted score is not calculated from the average of beginner level,
intermediate level, and advanced level. Instead, it is (the number of questions passed unit test / number of totals questions)

[zhimin-z]

the unweighted score is not calculated from the average of beginner level, intermediate level, and advanced level. Instead, it is (the number of questions passed unit test / number of totals questions)

Thanks for clarification, why not specify it in the documentation as well? @brightmart