> ## Documentation Index
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# Dart Division
The `/` operator in Dart is the arithmetic division operator. It evaluates the quotient of two numeric operands and strictly returns a double-precision floating-point number (`double`), regardless of whether the operands are integers or floating-point values.
## Type Signature
In the Dart core `num` class, the operator is defined with the following signature:
```dart theme={"dark"}
double operator /(num other);
```
## Mechanical Behavior
* **Strict Return Type:** Unlike languages (such as C or Java) where dividing two integers implicitly performs truncating integer division, Dart's `/` operator always yields a `double`. If integer division is required, Dart requires the use of the distinct truncating division operator (`~/`).
* **Operand Types:** The operator accepts any subtype of `num` (`int` or `double`) for both the left and right operands.
* **IEEE 754 Compliance:** The evaluation adheres to the IEEE 754 standard for floating-point arithmetic.
* **Division by Zero:** The `/` operator does not throw a runtime exception (such as `IntegerDivisionByZeroException`) when dividing by zero. Instead, it returns standard IEEE 754 floating-point constants:
* A positive number divided by `0` evaluates to `double.infinity`.
* A negative number divided by `0` evaluates to `double.negativeInfinity`.
* `0` divided by `0` evaluates to `double.nan` (Not-a-Number).
## Syntax Visualization
```dart theme={"dark"}
// Integer operands
int a = 10;
int b = 4;
double result1 = a / b; // Evaluates to 2.5
// Perfectly divisible integers still return a double
double result2 = 10 / 2; // Evaluates to 5.0
// Floating-point operands
double c = 5.5;
double d = 2.0;
double result3 = c / d; // Evaluates to 2.75
// Division by zero behavior
double inf = 5 / 0; // Evaluates to Infinity
double negInf = -5 / 0; // Evaluates to -Infinity
double nan = 0 / 0; // Evaluates to NaN
```
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