### BARS::Train Station Parking Signs in Naperville, Illinois

These parking signs are at the train station in Naperville, Illinois.

The parking signs say...

```   +-------------+  +-------------------+
| No Parking  |  |   9 Hour Parking  |
| Stopping or |  |     8 am-5 pm     |
|   Standing  |  |      Mon-Fri      |
|    6-8 am   |  |   Remember Your   |
|    5-7 pm   |  |   Space Number    |
+-------------+  | Pay \$2 at Station |
+-------------------+
```
```   the numbers are:  6  8  5  7  9  8  5  2

the math is:  8 - 6 + 7 - 5 = 9 - 8 + 5 - 2
* left-side sign equals right-side sign

more math:  (9 + 8 + 8) / 5 / 5 + 7 - 6 = 2

more math:  9 * 8 - 8 * 7 - 5 - (6 / 2)! = 5

more math:  (5 * sqrt(9 + 8 + 8))^(7 - 6) = 5^2

more math:  (9 - 8) + (8 - 7) + (6 - 5) + 2 = 5
* ()s used because that's how MathBabbler mentally evaluated it

rsPhiEval:  ((9 - 8) + (8 - 7) - (6 - 5)) + sqrt(5)) / 2 = Phi
* Phi is the golden ratio and it approximates 1.61803399

rsPiEval:  ((8 * 7) - 9 - 5 / 5 - 2) / (8 + 6) ~= Pi
* 22/7 approximates Pi rounded to nearest hundredth (3.14)
* 3.1415926535897932384626

rs21Eval:  7 * (5 - 2) * (6 + 5 - 9 - 8 / 8) = 21
* Illinois was the 21st state admitted to the Union.

rs37Eval:  9 + 8 + 8 + 7 + 6 - (5 / 5)^2 = 37
* Why rs37Eval? 37 Heaven @ http://thirty-seven.org

rs42Eval:  (6 + 5 + 5 * 2) * ((9 - 8) + (8 - 7)) = 42
* 42 is the "Answer to Life, the Universe, and Everything"

rsAgeEval:  9 + 8 + 8 + 7 + 6 + (5 + 5) * 2 = 58
* MathBabbler was 58 years young when he found these parking signs.

off-by-one rsCardinality:  (9 - 8) + (8 - 7) + (6 - 5) + (5 - 2)! = 8+1
* There are eight numbers in these parking signs.
```

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 12 January 2016 