No problem, we've got 6499 and 8139 to multiply
6499 × 8139 = 8139 × (6499)
+ 8139 × 9 giving us 73251
+ 8139 × 90 that is equal 732510
+ 8139 × 400 giving us 3255600
+ 8139 × 6000 that results in 48834000

= 52895361
