1/10 is a literal. It denotes the value one tenth. The expression (/ 1 10) will at runtime calculate 1 divided by 10. Most programming languages have syntax fo

1/10 is a literal. It denotes the value one tenth. The expression (/ 1 10) will at runtime calculate 1 divided by 10. Most programming languages have syntax for writing all available numbers as literals. Racket do not have builtin syntax for infix arithmetic - but there are various packages available for infix expressions.