Alright, let's work through 9943 times 4010 step by step
9943 × 4010 = 4010 × (9943)
+ 4010 × 3 resulting in 12030
+ 4010 × 40 resulting in 160400
+ 4010 × 900 that equals 3609000
+ 4010 × 9000 producing 36090000

= 39871430
