I am finding the average of numbers if the name matches. The code works fine if the numbers entered by users are whole numbers. when number is with decimal, code doesn't work. Please help

if __name__ == '__main__':

n = int(input())

student_marks = {}

for _ in range(n):

name, *line = input().split()

scores = list(map(float, line))

student_marks[name] = scores

query_name = input()

if name == query_name:

sum_of_elements = sum(scores)

len_of_list = len(scores)

avg = sum_of_elements/len_of_list

print("{0:.2f}".format(avg))