Alright, let's work through 81102768 times 16213067 step by step
81102768 × 16213067 = 16213067 × (81102768)
+ 16213067 × 8 that results in 129704536
+ 16213067 × 60 giving us 972784020
+ 16213067 × 700 which equals 11349146900
+ 16213067 × 2000 which equals 32426134000
+ 16213067 × 00000 what gives us 0
+ 16213067 × 100000 that equals 1621306700000
+ 16213067 × 1000000 that equals 16213067000000
+ 16213067 × 80000000 producing 1297045360000000

= 1314924611469456
