Alright, let's work through 3903 times 2387 step by step
3903 × 2387 = 2387 × (3903)
+ 2387 × 3 yielding 7161
+ 2387 × 00 yielding 0
+ 2387 × 900 what gives us 2148300
+ 2387 × 3000 yielding 7161000

= 9316461
