Alright, let's work through 1571 times 8404 step by step
1571 × 8404 = 8404 × (1571)
+ 8404 × 1 that equals 8404
+ 8404 × 70 yielding 588280
+ 8404 × 500 which equals 4202000
+ 8404 × 1000 which equals 8404000

= 13202684
