The Bears traveled to Giants Stadium to face the New York Giants. The game was highly anticipated, as it was the first game in  league history to benefit from the NFL's flexible scheduling.  Furthermore, leading up to the game Giants receiver Plaxico Burress provided plenty of fodder for the Chicago media by calling the Bears' cornerbacks "average". Nevertheless, the Bears went on to beat the Giants by a score of 38-20. The win over the Giants allowed the Bears to hold their first-place ranking in the National Football Conference. Devin Hester was also able to tie a record 108 yard return for a touchdown shared by teammate Nathan Vasher.
Question: How many points did the Bears win by?
Answer: 18