from collections import Counter

def makeAnagram(a, b):
    # Write your code here
    a_dict = Counter(a)
    b_dict = Counter(b)
    
    difference_1 = a_dict - b_dict
    difference_2 = b_dict - a_dict
    
    total_removal = sum(difference_1.values()) + sum(difference_2.values())
    
    return total_removal