No problem, we've got 9989 and 4457 to multiply
9989 × 4457 = 4457 × (9989)
+ 4457 × 9 what gives us 40113
+ 4457 × 80 giving us 356560
+ 4457 × 900 which equals 4011300
+ 4457 × 9000 that results in 40113000

= 44520973
