Alright, let's work through 3871 times 1453 step by step
3871 × 1453 = 1453 × (3871)
+ 1453 × 1 that is equal 1453
+ 1453 × 70 giving us 101710
+ 1453 × 800 that is equal 1162400
+ 1453 × 3000 which equals 4359000

= 5624563
