No problem, we've got 2904 and 6453 to multiply
2904 × 6453 = 6453 × (2904)
+ 6453 × 4 that is equal 25812
+ 6453 × 00 that equals 0
+ 6453 × 900 that equals 5807700
+ 6453 × 2000 that equals 12906000

= 18739512
