Alright, let's work through 1427 times 3639 step by step
1427 × 3639 = 3639 × (1427)
+ 3639 × 7 that equals 25473
+ 3639 × 20 what gives us 72780
+ 3639 × 400 that results in 1455600
+ 3639 × 1000 resulting in 3639000

= 5192853
