Alright, let's work through 54216639 times 80923418 step by step
54216639 × 80923418 = 80923418 × (54216639)
+ 80923418 × 9 resulting in 728310762
+ 80923418 × 30 resulting in 2427702540
+ 80923418 × 600 producing 48554050800
+ 80923418 × 6000 yielding 485540508000
+ 80923418 × 10000 giving us 809234180000
+ 80923418 × 200000 giving us 16184683600000
+ 80923418 × 4000000 yielding 323693672000000
+ 80923418 × 50000000 which equals 4046170900000000

= 4387395740352102
