Alright, let's work through 8289 times 9305 step by step
8289 × 9305 = 9305 × (8289)
+ 9305 × 9 what gives us 83745
+ 9305 × 80 giving us 744400
+ 9305 × 200 which equals 1861000
+ 9305 × 8000 which equals 74440000

= 77129145
