No problem, we've got 4312 and 909 to multiply
4312 × 909 = 909 × (4312)
+ 909 × 2 what gives us 1818
+ 909 × 10 that results in 9090
+ 909 × 300 that is equal 272700
+ 909 × 4000 producing 3636000

= 3919608
