Alright, let's work through 84378742 times 88556678 step by step
84378742 × 88556678 = 88556678 × (84378742)
+ 88556678 × 2 which equals 177113356
+ 88556678 × 40 resulting in 3542267120
+ 88556678 × 700 that equals 61989674600
+ 88556678 × 8000 yielding 708453424000
+ 88556678 × 70000 giving us 6198967460000
+ 88556678 × 300000 producing 26567003400000
+ 88556678 × 4000000 producing 354226712000000
+ 88556678 × 80000000 what gives us 7084534240000000

= 7472301085339076
