No problem, we've got 6451 and 4136 to multiply
6451 × 4136 = 4136 × (6451)
+ 4136 × 1 what gives us 4136
+ 4136 × 50 that is equal 206800
+ 4136 × 400 what gives us 1654400
+ 4136 × 6000 which equals 24816000

= 26681336
