Alright, let's work through 3515 times 5635 step by step
3515 × 5635 = 5635 × (3515)
+ 5635 × 5 resulting in 28175
+ 5635 × 10 that equals 56350
+ 5635 × 500 resulting in 2817500
+ 5635 × 3000 which equals 16905000

= 19807025
