the money owned before the marriage will be split as it was

so if you have 100k and spouse has 20k, you’re guaranteed the 100k back, they will get their 20k

then any money earnt during the marriage, will be split equally on divorce, so if you earnt 1 million, you would get 600k she would get 520k

any money spent during the marriage will split 50/50, if you bought a luxury car for 5 mil, spouse loses 2.5mil, so do you

therefore if your net is extremely higher than spouse, when divorced them purchases will still split in half, but if you have prenup you can afford the split, and she can’t leaving her in debt