We're going to solve 81123081 multiplied by 42802172
81123081 × 42802172 = 42802172 × (81123081)
+ 42802172 × 1 that equals 42802172
+ 42802172 × 80 that results in 3424173760
+ 42802172 × 000 resulting in 0
+ 42802172 × 3000 that equals 128406516000
+ 42802172 × 20000 resulting in 856043440000
+ 42802172 × 100000 producing 4280217200000
+ 42802172 × 1000000 producing 42802172000000
+ 42802172 × 80000000 which equals 3424173760000000

= 3472244066131932
