Alright, let's work through 3157 times 6893 step by step
3157 × 6893 = 6893 × (3157)
+ 6893 × 7 resulting in 48251
+ 6893 × 50 that equals 344650
+ 6893 × 100 what gives us 689300
+ 6893 × 3000 yielding 20679000

= 21761201
