No problem, we've got 6456 and 515 to multiply
6456 × 515 = 515 × (6456)
+ 515 × 6 resulting in 3090
+ 515 × 50 what gives us 25750
+ 515 × 400 giving us 206000
+ 515 × 6000 that results in 3090000

= 3324840
