Alright, let's work through 64787438 times 28910412 step by step
64787438 × 28910412 = 28910412 × (64787438)
+ 28910412 × 8 that is equal 231283296
+ 28910412 × 30 which equals 867312360
+ 28910412 × 400 that results in 11564164800
+ 28910412 × 7000 that equals 202372884000
+ 28910412 × 80000 yielding 2312832960000
+ 28910412 × 700000 that results in 20237288400000
+ 28910412 × 4000000 resulting in 115641648000000
+ 28910412 × 60000000 that equals 1734624720000000

= 1873031525004456
