Alright, let's work through 5250 times 4245 step by step
5250 × 4245 = 4245 × (5250)
+ 4245 × 0 resulting in 0
+ 4245 × 50 that results in 212250
+ 4245 × 200 producing 849000
+ 4245 × 5000 giving us 21225000

= 22286250
