Alright, let's work through 9901 times 9897 step by step
9901 × 9897 = 9897 × (9901)
+ 9897 × 1 which equals 9897
+ 9897 × 00 what gives us 0
+ 9897 × 900 what gives us 8907300
+ 9897 × 9000 which equals 89073000

= 97990197
