No problem, we've got 3988 and 1928 to multiply
3988 × 1928 = 1928 × (3988)
+ 1928 × 8 that equals 15424
+ 1928 × 80 what gives us 154240
+ 1928 × 900 producing 1735200
+ 1928 × 3000 resulting in 5784000

= 7688864
