Let's calculate 6511 x 7811
6511 × 7811 = 7811 × (6511)
+ 7811 × 1 which equals 7811
+ 7811 × 10 which equals 78110
+ 7811 × 500 resulting in 3905500
+ 7811 × 6000 that results in 46866000

= 50857421
