No problem, we've got 2151 and 7971 to multiply
2151 × 7971 = 7971 × (2151)
+ 7971 × 1 which equals 7971
+ 7971 × 50 what gives us 398550
+ 7971 × 100 producing 797100
+ 7971 × 2000 that results in 15942000

= 17145621
