No problem, we've got 2851 and 7064 to multiply
2851 × 7064 = 7064 × (2851)
+ 7064 × 1 what gives us 7064
+ 7064 × 50 which equals 353200
+ 7064 × 800 resulting in 5651200
+ 7064 × 2000 what gives us 14128000

= 20139464
