Alright, let's work through 5639 times 8068 step by step
5639 × 8068 = 8068 × (5639)
+ 8068 × 9 that results in 72612
+ 8068 × 30 that equals 242040
+ 8068 × 600 what gives us 4840800
+ 8068 × 5000 producing 40340000

= 45495452
