Alright, let's work through 78449092 times 16358099 step by step
78449092 × 16358099 = 16358099 × (78449092)
+ 16358099 × 2 what gives us 32716198
+ 16358099 × 90 yielding 1472228910
+ 16358099 × 000 which equals 0
+ 16358099 × 9000 producing 147222891000
+ 16358099 × 40000 yielding 654323960000
+ 16358099 × 400000 resulting in 6543239600000
+ 16358099 × 8000000 producing 130864792000000
+ 16358099 × 70000000 what gives us 1145066930000000

= 1283278013396108
