Alright, let's work through 2820 times 7446 step by step
2820 × 7446 = 7446 × (2820)
+ 7446 × 0 what gives us 0
+ 7446 × 20 which equals 148920
+ 7446 × 800 which equals 5956800
+ 7446 × 2000 producing 14892000

= 20997720
