Alright, let's work through 4905 times 5743 step by step
4905 × 5743 = 5743 × (4905)
+ 5743 × 5 what gives us 28715
+ 5743 × 00 resulting in 0
+ 5743 × 900 that results in 5168700
+ 5743 × 4000 what gives us 22972000

= 28169415
