No problem, we've got 2489 and 8089 to multiply
2489 × 8089 = 8089 × (2489)
+ 8089 × 9 that is equal 72801
+ 8089 × 80 which equals 647120
+ 8089 × 400 that equals 3235600
+ 8089 × 2000 which equals 16178000

= 20133521
