Alright, let's work through 12641189 times 12069991 step by step
12641189 × 12069991 = 12069991 × (12641189)
+ 12069991 × 9 producing 108629919
+ 12069991 × 80 that is equal 965599280
+ 12069991 × 100 giving us 1206999100
+ 12069991 × 1000 that equals 12069991000
+ 12069991 × 40000 producing 482799640000
+ 12069991 × 600000 that equals 7241994600000
+ 12069991 × 2000000 which equals 24139982000000
+ 12069991 × 10000000 giving us 120699910000000

= 152579037459299
