Postfix notation is one method of expressing calculations.

This word is used as a postposition.

He placed the honorific after his name.

It's difficult to solve this formula.

Prefix notation is a notation where the operator comes before the operands.

He ate one apple.

Please tell me the way to solve this problem.

In Japanese grammar, postpositions play an important role.

This is the first time I've seen this notation.

His poetry depicts emotions with beautiful expressions.