Description of implied multiplication in RedCrab Calculator
What is implied multiplication 

If no operator is specified between 2 values or variable, the values are multiplied. Example: 2π is equivalent to 2 ∙ π Between variables, a space must be set. Example: 2π f is interpreted as 2 ∙ π ∙ f. If there are no spaces between a and b, this is considered a variable named ab. After leading digits, space is not required because names must always begin with letters. The term 123a can therefore be clearly recognized as 123 ∙ a . 

Examples
