Alright, let's work through 4455 times 8972 step by step
4455 × 8972 = 8972 × (4455)
+ 8972 × 5 that equals 44860
+ 8972 × 50 yielding 448600
+ 8972 × 400 resulting in 3588800
+ 8972 × 4000 that results in 35888000

= 39970260
