No problem, we've got 1606 and 4225 to multiply
1606 × 4225 = 4225 × (1606)
+ 4225 × 6 that results in 25350
+ 4225 × 00 what gives us 0
+ 4225 × 600 that results in 2535000
+ 4225 × 1000 giving us 4225000

= 6785350
