Alright, let's work through 8406 times 442 step by step
8406 × 442 = 442 × (8406)
+ 442 × 6 that equals 2652
+ 442 × 00 what gives us 0
+ 442 × 400 giving us 176800
+ 442 × 8000 giving us 3536000

= 3715452
