computing average in nested loops

[cap510]

sum(weighted) = 1. The value of

    for num in weighted:
        score = float(input('Enter scores: ')) * num
        total += score
        total /= sum(weighted)
        total2 += total
        total2 /= len(students)

is what I am trying to use. Since sum(weighted) = 1, does it affect the value of total?