Alright, let's work through 8157 times 1666 step by step
8157 × 1666 = 1666 × (8157)
+ 1666 × 7 what gives us 11662
+ 1666 × 50 that is equal 83300
+ 1666 × 100 that equals 166600
+ 1666 × 8000 producing 13328000

= 13589562
