Alright, let's work through 1678 times 1428 step by step
1678 × 1428 = 1428 × (1678)
+ 1428 × 8 that is equal 11424
+ 1428 × 70 that is equal 99960
+ 1428 × 600 yielding 856800
+ 1428 × 1000 producing 1428000

= 2396184
