Alright, let's work through 9123 times 4215 step by step
9123 × 4215 = 4215 × (9123)
+ 4215 × 3 which equals 12645
+ 4215 × 20 giving us 84300
+ 4215 × 100 giving us 421500
+ 4215 × 9000 resulting in 37935000

= 38453445
