No problem, we've got 3909 and 9907 to multiply
3909 × 9907 = 9907 × (3909)
+ 9907 × 9 giving us 89163
+ 9907 × 00 yielding 0
+ 9907 × 900 what gives us 8916300
+ 9907 × 3000 resulting in 29721000

= 38726463
