No problem, we've got 5139 and 6319 to multiply
5139 × 6319 = 6319 × (5139)
+ 6319 × 9 that results in 56871
+ 6319 × 30 giving us 189570
+ 6319 × 100 what gives us 631900
+ 6319 × 5000 which equals 31595000

= 32473341
