Alright, let's work through 9401 times 9990 step by step
9401 × 9990 = 9990 × (9401)
+ 9990 × 1 what gives us 9990
+ 9990 × 00 that results in 0
+ 9990 × 400 yielding 3996000
+ 9990 × 9000 yielding 89910000

= 93915990
