Alright, let's work through 3405 times 5866 step by step
3405 × 5866 = 5866 × (3405)
+ 5866 × 5 that is equal 29330
+ 5866 × 00 that equals 0
+ 5866 × 400 which equals 2346400
+ 5866 × 3000 resulting in 17598000

= 19973730
