A parking area near Peter's house is 4 stories tall. There are 4 open parking spots on the first level. There are 7 more open parking spots on the second level than on the first level, and there are 6 more open parking spots on the third level than on the second level. There are 14 open parking spots on the fourth level. How many open parking spots are there in all? Let's think first. Chain of thought:
The number of open parking spots on the second level is 4 spots + 7 spots = 11 spots. The number of open parking spots on the third level is 11 spots + 6 spots = 17 spots. There are 4 spots + 11 spots + 17 spots + 14 spots = 46 open parking spots in all.
Therefore, the answer is 46.