We're going to solve 3925 multiplied by 3156
3925 × 3156 = 3156 × (3925)
+ 3156 × 5 that results in 15780
+ 3156 × 20 yielding 63120
+ 3156 × 900 that is equal 2840400
+ 3156 × 3000 yielding 9468000

= 12387300
