Please help with separator other than thousands

For a survey in India, I need to have a separator for lakhs (a hundred thousand), and crores (hundred lakhs, i.e., 10 million), so we need a thousand separator, and then separator for each 2 additional digits. Is this possible to implement? If so, how?

Thank you!

You can show entered values and calculated results as per Indian numbering system, but afaik not use it for entering values:

Thank you!
How can I apply the Indian numbering system to numeric variables?

Ah you used the public questionnaire, thank you!

Yes, this is Formatting content.
Does this solve the issue?

Yes, this solves the issue. Thank you!