Alright, let's work through 5357 times 5857 step by step
5357 × 5857 = 5857 × (5357)
+ 5857 × 7 producing 40999
+ 5857 × 50 resulting in 292850
+ 5857 × 300 giving us 1757100
+ 5857 × 5000 what gives us 29285000

= 31375949
