No problem, we've got 3905 and 1887 to multiply
3905 × 1887 = 1887 × (3905)
+ 1887 × 5 what gives us 9435
+ 1887 × 00 that equals 0
+ 1887 × 900 that equals 1698300
+ 1887 × 3000 what gives us 5661000

= 7368735
