Alright, let's work through 8423 times 153 step by step
8423 × 153 = 153 × (8423)
+ 153 × 3 that equals 459
+ 153 × 20 that results in 3060
+ 153 × 400 what gives us 61200
+ 153 × 8000 giving us 1224000

= 1288719
