If a retired FL resident had $900/month in SSec. benefits + an overseas annual dividend income (~$150K) from company shares, how much would they pay in taxes each year?

[h20dmc]

The FL resident is a US Citizen and had an exemption from paying tax in the foreign country (Ireland) where the annual dividend from company shares was paid for the past five years (averaging $150K). What would have been the taxes paid in FL/U.S. for this annual income (SS [$900/month] + overseas dividend income [~$150K/year])?