We're going to solve 3985 multiplied by 3456
3985 × 3456 = 3456 × (3985)
+ 3456 × 5 what gives us 17280
+ 3456 × 80 that equals 276480
+ 3456 × 900 yielding 3110400
+ 3456 × 3000 that equals 10368000

= 13772160
