Alright, let's work through 28018158 times 78813158 step by step
28018158 × 78813158 = 78813158 × (28018158)
+ 78813158 × 8 giving us 630505264
+ 78813158 × 50 that is equal 3940657900
+ 78813158 × 100 giving us 7881315800
+ 78813158 × 8000 which equals 630505264000
+ 78813158 × 10000 which equals 788131580000
+ 78813158 × 000000 that results in 0
+ 78813158 × 8000000 which equals 630505264000000
+ 78813158 × 20000000 what gives us 1576263160000000

= 2208199513322964
