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Karatsuba Method is preferred over grid multiplication, especially when numbers involved in the process have a large number of digits. The method/algorithm proposed is a typical example of the divide-and-conquer algorithm. It is a fast multiplication method proposed by Anatoly Karatsub in 1960. The procedure involves splitting numbers into two halves to represent the product of the original two numbers in the form of these four numbers. The algorithm is a linear time algorithm, which does not improve over the naive way of performing the multiplication.