Inform the unit how to send the receipt after drunk driving.

If you need to send a receipt, you can follow these steps:

1. Prepare the receipt and make sure its contents are accurate.

2. Contact your company or employer and tell them that you need to send a receipt.

3. Fill in the receipt and pay the postage according to the requirements of the unit or employer.

4. Send the receipt to the address designated by the unit or employer, and ensure that its contents are accurate.

It should be noted that the requirements of different units or employers may be different, so you need to fill in the receipt and pay the postage according to the requirements of the unit or employer.