No problem, we've got 7891 and 2549 to multiply
7891 × 2549 = 2549 × (7891)
+ 2549 × 1 that is equal 2549
+ 2549 × 90 that is equal 229410
+ 2549 × 800 which equals 2039200
+ 2549 × 7000 giving us 17843000

= 20114159
