Alright, let's work through 83604814 times 83495331 step by step
83604814 × 83495331 = 83495331 × (83604814)
+ 83495331 × 4 yielding 333981324
+ 83495331 × 10 producing 834953310
+ 83495331 × 800 giving us 66796264800
+ 83495331 × 4000 giving us 333981324000
+ 83495331 × 00000 producing 0
+ 83495331 × 600000 that equals 50097198600000
+ 83495331 × 3000000 that equals 250485993000000
+ 83495331 × 80000000 giving us 6679626480000000

= 6980611618123434
