Alright, let's work through 78936904 times 87916358 step by step
78936904 × 87916358 = 87916358 × (78936904)
+ 87916358 × 4 resulting in 351665432
+ 87916358 × 00 producing 0
+ 87916358 × 900 yielding 79124722200
+ 87916358 × 6000 yielding 527498148000
+ 87916358 × 30000 yielding 2637490740000
+ 87916358 × 900000 that equals 79124722200000
+ 87916358 × 8000000 giving us 703330864000000
+ 87916358 × 70000000 which equals 6154145060000000

= 6939845111475632
