Alright, let's work through 72669951 times 15545975 step by step
72669951 × 15545975 = 15545975 × (72669951)
+ 15545975 × 1 giving us 15545975
+ 15545975 × 50 giving us 777298750
+ 15545975 × 900 that equals 13991377500
+ 15545975 × 9000 resulting in 139913775000
+ 15545975 × 60000 resulting in 932758500000
+ 15545975 × 600000 which equals 9327585000000
+ 15545975 × 2000000 producing 31091950000000
+ 15545975 × 70000000 resulting in 1088218250000000

= 1129725241497225
