No problem, we've got 1634 and 1909 to multiply
1634 × 1909 = 1909 × (1634)
+ 1909 × 4 what gives us 7636
+ 1909 × 30 what gives us 57270
+ 1909 × 600 that is equal 1145400
+ 1909 × 1000 that is equal 1909000

= 3119306
