Alright, let's work through 80427463 times 84727236 step by step
80427463 × 84727236 = 84727236 × (80427463)
+ 84727236 × 3 that is equal 254181708
+ 84727236 × 60 resulting in 5083634160
+ 84727236 × 400 which equals 33890894400
+ 84727236 × 7000 what gives us 593090652000
+ 84727236 × 20000 yielding 1694544720000
+ 84727236 × 400000 yielding 33890894400000
+ 84727236 × 0000000 producing 0
+ 84727236 × 80000000 resulting in 6778178880000000

= 6814396638482268
