Alright, let's work through 2723 times 6637 step by step
2723 × 6637 = 6637 × (2723)
+ 6637 × 3 yielding 19911
+ 6637 × 20 yielding 132740
+ 6637 × 700 that is equal 4645900
+ 6637 × 2000 that equals 13274000

= 18072551
