No problem, we've got 4996 and 3990 to multiply
4996 × 3990 = 3990 × (4996)
+ 3990 × 6 that equals 23940
+ 3990 × 90 yielding 359100
+ 3990 × 900 yielding 3591000
+ 3990 × 4000 producing 15960000

= 19934040
