0×39

0×39 denotes the product of zero and thirty-nine. The result is zero. In standard arithmetic, multiplying by zero yields zero for any operand, so 0×39 equals 0 and, due to commutativity, 39×0 also equals 0.

This property is known as the zero property of multiplication. It follows from the definition of multiplication as repeated addition: 0×a can be viewed as adding a to itself zero times, which gives 0. The same reasoning shows that a×0 = 0 for any number a. The rule holds across the integers, rationals, reals, and many algebraic systems that include a multiplicative identity and zero element.

In practice, 0×39 is an unambiguous arithmetic value: zero. It can appear in calculations, algebraic simplifications, or as part of evaluating expressions where multiplication by zero occurs.

Note that in a different context, the string 0x39 (with a lowercase x) is commonly used in programming to denote a hexadecimal literal, representing the decimal value 57. This is distinct from the multiplication symbol and the arithmetic expression 0×39 discussed here. Understanding the symbol used is important to avoid confusion between these contexts.