| Form | Expression | complexity |
| factored sum |  | 13 |
| expanded |  | 24 |
| factored |  | 25 |
| Symbol | Classification | Complexity |
| R | rational numbers (integers are considered to have a denominator of 1) | sum of the absolute value of the numerator plus the denominator |
| F | floating point numbers | absolute value of the number |
| B | extended precision floating point numbers (bigfloats) | absolute value of the number |
| E | expressions that are not simple numbers | size of the expression (the number of operators and atomic operands) |