No problem, we've got 5315 and 3909 to multiply
5315 × 3909 = 3909 × (5315)
+ 3909 × 5 giving us 19545
+ 3909 × 10 yielding 39090
+ 3909 × 300 that results in 1172700
+ 3909 × 5000 producing 19545000

= 20776335
