Which one is the right usage?

[wannaknow]

Remember not to take calls while driving.

Remember to not take calls while driving.

WHICH ONE IS THE RIGHT?

[emsr2d2]

Remember not to take calls while driving.

Remember to not take calls while driving. X

WHICH ONE IS THE RIGHT? There is no need to put this in capital letters. Thank you.

See above.

[wannaknow]

See above.

Thank you. Could you explain why it's right?

[Raymott]

Thank you. Could you explain why it's right?

It's right because that is the way we say it. They are both grammatical.

[Rover_KE]

This is one occasion when it's better not to split the infinitive.

Rover