C# Language Specification

Arithmetic operators

The *, /, %, +, and – operators are called the arithmetic operators.

multiplicative-expression:
unary-expression
multiplicative-expression * unary-expression
multiplicative-expression / unary-expression
multiplicative-expression % unary-expression

additive-expression:
multiplicative-expression
additive-expression + multiplicative-expression
additive-expression – multiplicative-expression

If an operand of an arithmetic operator has the compile-time type dynamic, then the expression is dynamically bound (§7.2.2). In this case the compile-time type of the expression is dynamic, and the resolution described below will take place at run-time using the run-time type of those operands that have the compile-time type dynamic.

1.