**Yes**, the question is on-topic.

If a question `How is <coiso> understood in <country>?` is on-topic,  
so must its counter-point `How should I understand <coiso> in <country>?` be on-topic.

And this question can be distilled to `How should I understand "salary of RS123$456?"`.

# But its quality is *bleh*

That said, the question itself is in dire need of improvement, and in its current shape I don't find it useful for the community.