Let's calculate 6781 x 1878
6781 × 1878 = 1878 × (6781)
+ 1878 × 1 that results in 1878
+ 1878 × 80 which equals 150240
+ 1878 × 700 which equals 1314600
+ 1878 × 6000 that equals 11268000

= 12734718
