No problem, we've got 4007 and 6475 to multiply
4007 × 6475 = 6475 × (4007)
+ 6475 × 7 what gives us 45325
+ 6475 × 00 producing 0
+ 6475 × 000 giving us 0
+ 6475 × 4000 producing 25900000

= 25945325
