Alright, let's work through 4393 times 4557 step by step
4393 × 4557 = 4557 × (4393)
+ 4557 × 3 yielding 13671
+ 4557 × 90 that equals 410130
+ 4557 × 300 giving us 1367100
+ 4557 × 4000 resulting in 18228000

= 20018901
