No problem, we've got 4126 and 1597 to multiply
4126 × 1597 = 1597 × (4126)
+ 1597 × 6 what gives us 9582
+ 1597 × 20 resulting in 31940
+ 1597 × 100 which equals 159700
+ 1597 × 4000 that equals 6388000

= 6589222
