Alright, let's work through 6637 times 5557 step by step
6637 × 5557 = 5557 × (6637)
+ 5557 × 7 producing 38899
+ 5557 × 30 resulting in 166710
+ 5557 × 600 that results in 3334200
+ 5557 × 6000 that is equal 33342000

= 36881809
