Alright, let's work through 72163108 times 70805055 step by step
72163108 × 70805055 = 70805055 × (72163108)
+ 70805055 × 8 resulting in 566440440
+ 70805055 × 00 resulting in 0
+ 70805055 × 100 producing 7080505500
+ 70805055 × 3000 yielding 212415165000
+ 70805055 × 60000 yielding 4248303300000
+ 70805055 × 100000 resulting in 7080505500000
+ 70805055 × 2000000 yielding 141610110000000
+ 70805055 × 70000000 resulting in 4956353850000000

= 5109512830910940
