Alright, let's work through 9154 times 900 step by step
9154 × 900 = 900 × (9154)
+ 900 × 4 giving us 3600
+ 900 × 50 yielding 45000
+ 900 × 100 yielding 90000
+ 900 × 9000 what gives us 8100000

= 8238600
