No problem, we've got 2019 and 4131 to multiply
2019 × 4131 = 4131 × (2019)
+ 4131 × 9 that is equal 37179
+ 4131 × 10 producing 41310
+ 4131 × 000 what gives us 0
+ 4131 × 2000 yielding 8262000

= 8340489
