Alright, let's work through 78785279 times 37876378 step by step
78785279 × 37876378 = 37876378 × (78785279)
+ 37876378 × 9 that is equal 340887402
+ 37876378 × 70 what gives us 2651346460
+ 37876378 × 200 what gives us 7575275600
+ 37876378 × 5000 which equals 189381890000
+ 37876378 × 80000 which equals 3030110240000
+ 37876378 × 700000 producing 26513464600000
+ 37876378 × 8000000 yielding 303011024000000
+ 37876378 × 70000000 what gives us 2651346460000000

= 2984101008239462
