No problem, we've got 1986 and 4321 to multiply
1986 × 4321 = 4321 × (1986)
+ 4321 × 6 giving us 25926
+ 4321 × 80 resulting in 345680
+ 4321 × 900 that is equal 3888900
+ 4321 × 1000 that equals 4321000

= 8581506
