TypeError: 'float' object is not callable (Finding Averages of a list of numbers) :     sales = [49.99, 20, 155.20, 71.65, 91.07]
    
    length = len(sales)
    max_value = max(sales)
    min_value = min(sales)
    sum_of_values = sum(sales)
    
    print(length, max_value, min_value, sum_value)
    
    average = float(sum_of_values/length)
    
    answer = round(average,2)
    
    print(answer)



im trying to get a sum of the numbers in the list and then finding the average, rounding the average to 2 decimal places, and then printing it. how would i fix this error?