Alright, let's work through 9156 times 3923 step by step
9156 × 3923 = 3923 × (9156)
+ 3923 × 6 what gives us 23538
+ 3923 × 50 producing 196150
+ 3923 × 100 that is equal 392300
+ 3923 × 9000 yielding 35307000

= 35918988
