The true number isn’t known, due to the large amount of fake ballots traditionally cast on behalf of democrats.
The ballots you mentioned, the illegals who vote and the corruption in actually counting votes means that California cannot legally certify their election results.
For this reason I continually make contact with our state legislators urging them to bring a lawsuit with the federal elections commission to disallow the counting of California electoral college votes in presidential elections.
California's 55 electoral votes cancel out the legal votes in as many as 11 western and central states.