Alright, let's work through 12126874 times 34207346 step by step
12126874 × 34207346 = 34207346 × (12126874)
+ 34207346 × 4 which equals 136829384
+ 34207346 × 70 yielding 2394514220
+ 34207346 × 800 which equals 27365876800
+ 34207346 × 6000 giving us 205244076000
+ 34207346 × 20000 resulting in 684146920000
+ 34207346 × 100000 that results in 3420734600000
+ 34207346 × 2000000 producing 68414692000000
+ 34207346 × 10000000 which equals 342073460000000

= 414828174816404
