Perkalian Silang Contoh Keempat

23 * 41

ab * cd = a * c ( a * d + b * c ) b * d

= 2 * 4 ( 2 * 1 + 3 * 4 ) 3 * 1
= 8 ( 2 + 12 ) 3
= 8 ( 14 ) 3
= ( 8 + 1 ) 4 3
= 943