No problem, we've got 1944 and 1638 to multiply
1944 × 1638 = 1638 × (1944)
+ 1638 × 4 what gives us 6552
+ 1638 × 40 that equals 65520
+ 1638 × 900 yielding 1474200
+ 1638 × 1000 yielding 1638000

= 3184272
