Alright, let's work through 9841 times 405 step by step
9841 × 405 = 405 × (9841)
+ 405 × 1 yielding 405
+ 405 × 40 giving us 16200
+ 405 × 800 that results in 324000
+ 405 × 9000 yielding 3645000

= 3985605
