Alright, let's work through 9889 times 9141 step by step
9889 × 9141 = 9141 × (9889)
+ 9141 × 9 what gives us 82269
+ 9141 × 80 yielding 731280
+ 9141 × 800 that results in 7312800
+ 9141 × 9000 that is equal 82269000

= 90395349
