Alright, let's work through 1642 times 8017 step by step
1642 × 8017 = 8017 × (1642)
+ 8017 × 2 giving us 16034
+ 8017 × 40 which equals 320680
+ 8017 × 600 that equals 4810200
+ 8017 × 1000 which equals 8017000

= 13163914
