No problem, we've got 9956 and 6399 to multiply
9956 × 6399 = 6399 × (9956)
+ 6399 × 6 what gives us 38394
+ 6399 × 50 producing 319950
+ 6399 × 900 resulting in 5759100
+ 6399 × 9000 which equals 57591000

= 63708444
