No problem, we've got 7861 and 3609 to multiply
7861 × 3609 = 3609 × (7861)
+ 3609 × 1 giving us 3609
+ 3609 × 60 what gives us 216540
+ 3609 × 800 producing 2887200
+ 3609 × 7000 which equals 25263000

= 28370349
