Alright, let's work through 9104 times 9145 step by step
9104 × 9145 = 9145 × (9104)
+ 9145 × 4 giving us 36580
+ 9145 × 00 what gives us 0
+ 9145 × 100 producing 914500
+ 9145 × 9000 what gives us 82305000

= 83256080
