Alright, let's work through 28500977 times 70083089 step by step
28500977 × 70083089 = 70083089 × (28500977)
+ 70083089 × 7 yielding 490581623
+ 70083089 × 70 what gives us 4905816230
+ 70083089 × 900 resulting in 63074780100
+ 70083089 × 0000 that results in 0
+ 70083089 × 00000 producing 0
+ 70083089 × 500000 giving us 35041544500000
+ 70083089 × 8000000 that equals 560664712000000
+ 70083089 × 20000000 which equals 1401661780000000

= 1997436507677953
