Alright, let's work through 78907320 times 79286936 step by step
78907320 × 79286936 = 79286936 × (78907320)
+ 79286936 × 0 that equals 0
+ 79286936 × 20 producing 1585738720
+ 79286936 × 300 that is equal 23786080800
+ 79286936 × 7000 that equals 555008552000
+ 79286936 × 00000 that is equal 0
+ 79286936 × 900000 yielding 71358242400000
+ 79286936 × 8000000 what gives us 634295488000000
+ 79286936 × 70000000 that results in 5550085520000000

= 6256319630771520
