No problem, we've got 9991 and 4069 to multiply
9991 × 4069 = 4069 × (9991)
+ 4069 × 1 producing 4069
+ 4069 × 90 that results in 366210
+ 4069 × 900 giving us 3662100
+ 4069 × 9000 what gives us 36621000

= 40653379
