Alright, let's work through 12678026 times 10356066 step by step
12678026 × 10356066 = 10356066 × (12678026)
+ 10356066 × 6 that is equal 62136396
+ 10356066 × 20 yielding 207121320
+ 10356066 × 000 that results in 0
+ 10356066 × 8000 resulting in 82848528000
+ 10356066 × 70000 that equals 724924620000
+ 10356066 × 600000 which equals 6213639600000
+ 10356066 × 2000000 that results in 20712132000000
+ 10356066 × 10000000 producing 103560660000000

= 131294474005716
