1. If you are in community property states, such as CA, AZ western states, https://en.wikipedia.org/wiki/Community_property_in_the_United_States
All marital assets are divided 50-50. Individual assets are still individual.
2. If you are in equitible distribution states, all states except those in community property above. Your marital assets are divided depends on the factors here https://www.legalmatch.com/law-library/article/equitable-distribution-factors.html
If you and your husbands are similar in age, health, work capabilities etc, then most likely marital assets are divided 50-50. Individual assets are still individual.
3. Individial vs. martial assets.
Only marital assets are included in the division for rules above. Individual assets are still individual.
Marital assets include: joinly held real estate, joint bank account, and all incomes earned after marriage. So for retirement accounts under individuals name, those contributions during marriages are incomes earned after marriage, and still is marital assets.
Individual assets not included in divisions includes: Pre-marital assets that individuals did not contribute time and labor after marriage (like a house in China that managed by one's parents), gifts and inhertance given to one individual and not to both husband and wife.
There are many interplays with marital and individual assets that are not discussed here. You need to ask your local lawyer to your individual circumstances and local laws.
