Alright, let's work through 72160208 times 54777759 step by step
72160208 × 54777759 = 54777759 × (72160208)
+ 54777759 × 8 that equals 438222072
+ 54777759 × 00 which equals 0
+ 54777759 × 200 which equals 10955551800
+ 54777759 × 0000 resulting in 0
+ 54777759 × 60000 that equals 3286665540000
+ 54777759 × 100000 what gives us 5477775900000
+ 54777759 × 2000000 that is equal 109555518000000
+ 54777759 × 70000000 resulting in 3834443130000000

= 3952774483213872
