Alright, let's work through 12136782 times 29187107 step by step
12136782 × 29187107 = 29187107 × (12136782)
+ 29187107 × 2 resulting in 58374214
+ 29187107 × 80 giving us 2334968560
+ 29187107 × 700 producing 20430974900
+ 29187107 × 6000 that equals 175122642000
+ 29187107 × 30000 that equals 875613210000
+ 29187107 × 100000 giving us 2918710700000
+ 29187107 × 2000000 giving us 58374214000000
+ 29187107 × 10000000 giving us 291871070000000

= 354237554869674
