No problem, we've got 3629 and 7871 to multiply
3629 × 7871 = 7871 × (3629)
+ 7871 × 9 that equals 70839
+ 7871 × 20 yielding 157420
+ 7871 × 600 that is equal 4722600
+ 7871 × 3000 that results in 23613000

= 28563859
