Alright, let's work through 4531945 times 17801956 step by step
4531945 × 17801956 = 17801956 × (4531945)
+ 17801956 × 5 resulting in 89009780
+ 17801956 × 40 resulting in 712078240
+ 17801956 × 900 producing 16021760400
+ 17801956 × 1000 what gives us 17801956000
+ 17801956 × 30000 yielding 534058680000
+ 17801956 × 500000 which equals 8900978000000
+ 17801956 × 4000000 producing 71207824000000

= 80677485484420
