Alright, let's work through 81792812 times 40266153 step by step
81792812 × 40266153 = 40266153 × (81792812)
+ 40266153 × 2 which equals 80532306
+ 40266153 × 10 that results in 402661530
+ 40266153 × 800 that equals 32212922400
+ 40266153 × 2000 giving us 80532306000
+ 40266153 × 90000 which equals 3623953770000
+ 40266153 × 700000 that results in 28186307100000
+ 40266153 × 1000000 giving us 40266153000000
+ 40266153 × 80000000 that results in 3221292240000000

= 3293481882292236
