No problem, we've got 5171 and 3807 to multiply
5171 × 3807 = 3807 × (5171)
+ 3807 × 1 that is equal 3807
+ 3807 × 70 which equals 266490
+ 3807 × 100 which equals 380700
+ 3807 × 5000 which equals 19035000

= 19685997
