No problem, we've got 8134 and 1685 to multiply
8134 × 1685 = 1685 × (8134)
+ 1685 × 4 which equals 6740
+ 1685 × 30 that is equal 50550
+ 1685 × 100 what gives us 168500
+ 1685 × 8000 that is equal 13480000

= 13705790
