Alright, let's work through 3129 times 6774 step by step
3129 × 6774 = 6774 × (3129)
+ 6774 × 9 giving us 60966
+ 6774 × 20 that equals 135480
+ 6774 × 100 which equals 677400
+ 6774 × 3000 yielding 20322000

= 21195846
