Alright, let's work through 5202 times 2390 step by step
5202 × 2390 = 2390 × (5202)
+ 2390 × 2 producing 4780
+ 2390 × 00 that results in 0
+ 2390 × 200 that results in 478000
+ 2390 × 5000 which equals 11950000

= 12432780
