Alright, let's work through 80155361 times 39420808 step by step
80155361 × 39420808 = 39420808 × (80155361)
+ 39420808 × 1 that equals 39420808
+ 39420808 × 60 producing 2365248480
+ 39420808 × 300 giving us 11826242400
+ 39420808 × 5000 that is equal 197104040000
+ 39420808 × 50000 that equals 1971040400000
+ 39420808 × 100000 yielding 3942080800000
+ 39420808 × 0000000 giving us 0
+ 39420808 × 80000000 which equals 3153664640000000

= 3159789096151688
