An episode of the television show, Legend of the Far Mountain, normally lasts 30 minutes and has 8 minutes of commercials. Tonight is the season finale, and the show will be 90 minutes long.
If the ratio of the show's length to the amount of commercial time is the same, how many minutes of commercials there will be during tonight's show?
The ratio of show time to commercial time is 30/8 = <<30/8=3.75>>3.75.
The season finale will last for 90 minutes.
The amount of commercial time during the season finale, if the ratio remains the same, will be 3.75*90 = <<3.75*90=337.5>>337.5 minutes. Answer: \boxed{337.5}.