Alright, let's work through 78508345 times 1335613 step by step
78508345 × 1335613 = 1335613 × (78508345)
+ 1335613 × 5 producing 6678065
+ 1335613 × 40 giving us 53424520
+ 1335613 × 300 yielding 400683900
+ 1335613 × 8000 that results in 10684904000
+ 1335613 × 00000 that equals 0
+ 1335613 × 500000 which equals 667806500000
+ 1335613 × 8000000 what gives us 10684904000000
+ 1335613 × 70000000 which equals 93492910000000

= 104856766190485
