Alright, let's work through 5111 times 8020 step by step
5111 × 8020 = 8020 × (5111)
+ 8020 × 1 that is equal 8020
+ 8020 × 10 producing 80200
+ 8020 × 100 producing 802000
+ 8020 × 5000 which equals 40100000

= 40990220
