In the Karatsuba algorithm to multiply two numbers, we divide each number into two. For example:
x= 1234 y= 2456
Then a = 12, b = 34, c = 24, d = 56
What happens if the digits in each number are not even or equal? What is the rule by dividing it into two parts?
x = 12345 y = 2478
x = 12456778 y = 241