Alright, let's work through 78209396 times 8957320 step by step
78209396 × 8957320 = 8957320 × (78209396)
+ 8957320 × 6 that results in 53743920
+ 8957320 × 90 resulting in 806158800
+ 8957320 × 300 resulting in 2687196000
+ 8957320 × 9000 producing 80615880000
+ 8957320 × 00000 that is equal 0
+ 8957320 × 200000 that equals 1791464000000
+ 8957320 × 8000000 that equals 71658560000000
+ 8957320 × 70000000 that results in 627012400000000

= 700546586978720
