No problem, we've got 6403 and 6807 to multiply
6403 × 6807 = 6807 × (6403)
+ 6807 × 3 that results in 20421
+ 6807 × 00 resulting in 0
+ 6807 × 400 yielding 2722800
+ 6807 × 6000 what gives us 40842000

= 43585221
