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operators represent mathematical operations
use parentheses if unsure of order (and a good habit)
logical operators return either True or False
order of precedence:
| Order | Symbol | Operation |
| 1 | - | Negation |
| 2 | % | Percentage |
| 3 | ^ | Exponentiation |
| 4 | / | Division |
| 4 | * | Multiplication |
| 5 | + | Addition |
| 5 | - | Subtraction |
| 6 | & | String concatenation: join several text strings together into a single string |
| 7 | = | Equal To |
| 7 | <> | Not Equal To |
| 7 | < | Less Than |
| 7 | > | Greater Than |
| 7 | <= | Less Than or Equal To |
| 7 | >= | Greater Than or Equal To |
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