No problem, we've got 9911 and 4536 to multiply
9911 × 4536 = 4536 × (9911)
+ 4536 × 1 that is equal 4536
+ 4536 × 10 what gives us 45360
+ 4536 × 900 producing 4082400
+ 4536 × 9000 that is equal 40824000

= 44956296
