No problem, we've got 3991 and 9856 to multiply
3991 × 9856 = 9856 × (3991)
+ 9856 × 1 yielding 9856
+ 9856 × 90 what gives us 887040
+ 9856 × 900 that equals 8870400
+ 9856 × 3000 giving us 29568000

= 39335296
