Alright, let's work through 3955 times 622 step by step
3955 × 622 = 622 × (3955)
+ 622 × 5 what gives us 3110
+ 622 × 50 producing 31100
+ 622 × 900 that equals 559800
+ 622 × 3000 that equals 1866000

= 2460010
