No problem, we've got 1987 and 4151 to multiply
1987 × 4151 = 4151 × (1987)
+ 4151 × 7 that is equal 29057
+ 4151 × 80 yielding 332080
+ 4151 × 900 which equals 3735900
+ 4151 × 1000 that results in 4151000

= 8248037
