Alright, let's work through 84680002 times 67078343 step by step
84680002 × 67078343 = 67078343 × (84680002)
+ 67078343 × 2 resulting in 134156686
+ 67078343 × 00 that is equal 0
+ 67078343 × 000 yielding 0
+ 67078343 × 0000 that equals 0
+ 67078343 × 80000 yielding 5366267440000
+ 67078343 × 600000 which equals 40247005800000
+ 67078343 × 4000000 resulting in 268313372000000
+ 67078343 × 80000000 that is equal 5366267440000000

= 5680194219396686
