Alright, let's work through 8414 times 8428 step by step
8414 × 8428 = 8428 × (8414)
+ 8428 × 4 that equals 33712
+ 8428 × 10 yielding 84280
+ 8428 × 400 that is equal 3371200
+ 8428 × 8000 yielding 67424000

= 70913192
