No problem, we've got 9141 and 9991 to multiply
9141 × 9991 = 9991 × (9141)
+ 9991 × 1 that equals 9991
+ 9991 × 40 yielding 399640
+ 9991 × 100 what gives us 999100
+ 9991 × 9000 that equals 89919000

= 91327731
