No problem, we've got 4120 and 856 to multiply
4120 × 856 = 856 × (4120)
+ 856 × 0 that results in 0
+ 856 × 20 which equals 17120
+ 856 × 100 resulting in 85600
+ 856 × 4000 what gives us 3424000

= 3526720
