Alright, let's work through 9264 times 8421 step by step
9264 × 8421 = 8421 × (9264)
+ 8421 × 4 that equals 33684
+ 8421 × 60 which equals 505260
+ 8421 × 200 what gives us 1684200
+ 8421 × 9000 producing 75789000

= 78012144
