No problem, we've got 9959 and 8143 to multiply
9959 × 8143 = 8143 × (9959)
+ 8143 × 9 yielding 73287
+ 8143 × 50 that equals 407150
+ 8143 × 900 what gives us 7328700
+ 8143 × 9000 yielding 73287000

= 81096137
