Alright, let's work through 5801 times 1639 step by step
5801 × 1639 = 1639 × (5801)
+ 1639 × 1 what gives us 1639
+ 1639 × 00 that results in 0
+ 1639 × 800 producing 1311200
+ 1639 × 5000 which equals 8195000

= 9507839
