Alright, let's work through 3486 times 5872 step by step
3486 × 5872 = 5872 × (3486)
+ 5872 × 6 giving us 35232
+ 5872 × 80 producing 469760
+ 5872 × 400 that is equal 2348800
+ 5872 × 3000 resulting in 17616000

= 20469792
