No problem, we've got 2135 and 3819 to multiply
2135 × 3819 = 3819 × (2135)
+ 3819 × 5 what gives us 19095
+ 3819 × 30 resulting in 114570
+ 3819 × 100 resulting in 381900
+ 3819 × 2000 which equals 7638000

= 8153565
