No problem, we've got 3894 and 1123 to multiply
3894 × 1123 = 1123 × (3894)
+ 1123 × 4 resulting in 4492
+ 1123 × 90 giving us 101070
+ 1123 × 800 what gives us 898400
+ 1123 × 3000 resulting in 3369000

= 4372962
