No problem, we've got 8309 and 2503 to multiply
8309 × 2503 = 2503 × (8309)
+ 2503 × 9 that results in 22527
+ 2503 × 00 giving us 0
+ 2503 × 300 resulting in 750900
+ 2503 × 8000 yielding 20024000

= 20797427
