No problem, we've got 3200 and 3978 to multiply
3200 × 3978 = 3978 × (3200)
+ 3978 × 0 giving us 0
+ 3978 × 00 which equals 0
+ 3978 × 200 resulting in 795600
+ 3978 × 3000 which equals 11934000

= 12729600
