Alright, let's work through 8453 times 1002 step by step
8453 × 1002 = 1002 × (8453)
+ 1002 × 3 giving us 3006
+ 1002 × 50 resulting in 50100
+ 1002 × 400 resulting in 400800
+ 1002 × 8000 giving us 8016000

= 8469906
