Alright, let's work through 5172 times 5407 step by step
5172 × 5407 = 5407 × (5172)
+ 5407 × 2 that equals 10814
+ 5407 × 70 what gives us 378490
+ 5407 × 100 that results in 540700
+ 5407 × 5000 yielding 27035000

= 27965004
