Alright, let's work through 80157404 times 55510320 step by step
80157404 × 55510320 = 55510320 × (80157404)
+ 55510320 × 4 that results in 222041280
+ 55510320 × 00 which equals 0
+ 55510320 × 400 resulting in 22204128000
+ 55510320 × 7000 that equals 388572240000
+ 55510320 × 50000 that equals 2775516000000
+ 55510320 × 100000 giving us 5551032000000
+ 55510320 × 0000000 that results in 0
+ 55510320 × 80000000 resulting in 4440825600000000

= 4449563146409280
