No problem, we've got 6499 and 399 to multiply
6499 × 399 = 399 × (6499)
+ 399 × 9 yielding 3591
+ 399 × 90 that is equal 35910
+ 399 × 400 what gives us 159600
+ 399 × 6000 that equals 2394000

= 2593101
