No problem, we've got 3183 and 3923 to multiply
3183 × 3923 = 3923 × (3183)
+ 3923 × 3 what gives us 11769
+ 3923 × 80 which equals 313840
+ 3923 × 100 producing 392300
+ 3923 × 3000 that results in 11769000

= 12486909
