Alright, let's work through 3748941 times 36899619 step by step
3748941 × 36899619 = 36899619 × (3748941)
+ 36899619 × 1 yielding 36899619
+ 36899619 × 40 which equals 1475984760
+ 36899619 × 900 that equals 33209657100
+ 36899619 × 8000 resulting in 295196952000
+ 36899619 × 40000 yielding 1475984760000
+ 36899619 × 700000 giving us 25829733300000
+ 36899619 × 3000000 that equals 110698857000000

= 138334494553479
