Alright, let's work through 5135 times 3435 step by step
5135 × 3435 = 3435 × (5135)
+ 3435 × 5 producing 17175
+ 3435 × 30 producing 103050
+ 3435 × 100 what gives us 343500
+ 3435 × 5000 what gives us 17175000

= 17638725
