No problem, we've got 3990 and 2377 to multiply
3990 × 2377 = 2377 × (3990)
+ 2377 × 0 giving us 0
+ 2377 × 90 that equals 213930
+ 2377 × 900 producing 2139300
+ 2377 × 3000 that results in 7131000

= 9484230
