Alright, let's work through 3922 times 2505 step by step
3922 × 2505 = 2505 × (3922)
+ 2505 × 2 which equals 5010
+ 2505 × 20 yielding 50100
+ 2505 × 900 that equals 2254500
+ 2505 × 3000 what gives us 7515000

= 9824610
