The remaining mortgage balance can be divided between the couple in several ways, depending on the divorce agreement and local laws:

1. Equal split: Divide the remaining balance equally between both spouses.

2. Proportional split: Divide the balance based on each spouse's contribution to the mortgage payments or their income ratio.

3. One spouse takes responsibility: One spouse may agree to pay off the entire remaining balance, potentially in exchange for other assets or concessions.

4. Refinance and split: Refinance the mortgage, and both spouses take out new loans for their respective shares of the property's value.

5. Sell and split proceeds: Sell the property, and divide the proceeds after paying off the remaining mortgage balance.

6. Mediation or arbitration: A neutral third party helps the couple reach a mutually acceptable agreement.

7. Court decision: If the couple cannot agree, the court will decide how to divide the remaining mortgage balance.

To determine how to divide the remaining mortgage balance, consider:

1. Consulting with a divorce attorney

2. Reviewing the divorce agreement and local laws

3. Assessing each spouse's financial situation and contributions

4. Negotiating a mutually acceptable agreement

5. Seeking mediation or arbitration if necessary

Remember, dividing the remaining mortgage balance requires careful consideration of individual circumstances and legal requirements.