No problem, we've got 2509 and 6658 to multiply
2509 × 6658 = 6658 × (2509)
+ 6658 × 9 producing 59922
+ 6658 × 00 which equals 0
+ 6658 × 500 giving us 3329000
+ 6658 × 2000 producing 13316000

= 16704922
