Alright, let's work through 2357 times 8859 step by step
2357 × 8859 = 8859 × (2357)
+ 8859 × 7 producing 62013
+ 8859 × 50 what gives us 442950
+ 8859 × 300 producing 2657700
+ 8859 × 2000 that equals 17718000

= 20880663
