Alright, let's work through 4210 times 8120 step by step
4210 × 8120 = 8120 × (4210)
+ 8120 × 0 which equals 0
+ 8120 × 10 giving us 81200
+ 8120 × 200 that equals 1624000
+ 8120 × 4000 producing 32480000

= 34185200
