No problem, we've got 6463 and 6535 to multiply
6463 × 6535 = 6535 × (6463)
+ 6535 × 3 that is equal 19605
+ 6535 × 60 that results in 392100
+ 6535 × 400 that results in 2614000
+ 6535 × 6000 yielding 39210000

= 42235705
