Alright, let's work through 78238908 times 23887967 step by step
78238908 × 23887967 = 23887967 × (78238908)
+ 23887967 × 8 yielding 191103736
+ 23887967 × 00 what gives us 0
+ 23887967 × 900 that is equal 21499170300
+ 23887967 × 8000 resulting in 191103736000
+ 23887967 × 30000 that equals 716639010000
+ 23887967 × 200000 giving us 4777593400000
+ 23887967 × 8000000 giving us 191103736000000
+ 23887967 × 70000000 producing 1672157690000000

= 1868968452420036
