No problem, we've got 3971 and 4192 to multiply
3971 × 4192 = 4192 × (3971)
+ 4192 × 1 giving us 4192
+ 4192 × 70 what gives us 293440
+ 4192 × 900 which equals 3772800
+ 4192 × 3000 what gives us 12576000

= 16646432
