No problem, we've got 9876 and 2151 to multiply
9876 × 2151 = 2151 × (9876)
+ 2151 × 6 what gives us 12906
+ 2151 × 70 that results in 150570
+ 2151 × 800 producing 1720800
+ 2151 × 9000 which equals 19359000

= 21243276
