Alright, let's work through 5226 times 4102 step by step
5226 × 4102 = 4102 × (5226)
+ 4102 × 6 that is equal 24612
+ 4102 × 20 that results in 82040
+ 4102 × 200 what gives us 820400
+ 4102 × 5000 giving us 20510000

= 21437052
