Alright, let's work through 3501 times 2504 step by step
3501 × 2504 = 2504 × (3501)
+ 2504 × 1 what gives us 2504
+ 2504 × 00 that results in 0
+ 2504 × 500 yielding 1252000
+ 2504 × 3000 that results in 7512000

= 8766504
