Alright, let's work through 28300607 times 2709088 step by step
28300607 × 2709088 = 2709088 × (28300607)
+ 2709088 × 7 giving us 18963616
+ 2709088 × 00 giving us 0
+ 2709088 × 600 which equals 1625452800
+ 2709088 × 0000 that is equal 0
+ 2709088 × 00000 yielding 0
+ 2709088 × 300000 which equals 812726400000
+ 2709088 × 8000000 that equals 21672704000000
+ 2709088 × 20000000 that results in 54181760000000

= 76668834816416
