No problem, we've got 6851 and 4215 to multiply
6851 × 4215 = 4215 × (6851)
+ 4215 × 1 resulting in 4215
+ 4215 × 50 which equals 210750
+ 4215 × 800 resulting in 3372000
+ 4215 × 6000 which equals 25290000

= 28876965
