Leviticus 25:8 (Sefaria English translation):
וְסָפַרְתָּ֣ לְךָ֗ שֶׁ֚בַע שַׁבְּתֹ֣ת שָׁנִ֔ים שֶׁ֥בַע שָׁנִ֖ים שֶׁ֣בַע פְּעָמִ֑ים וְהָי֣וּ לְךָ֗ יְמֵי֙ שֶׁ֚בַע שַׁבְּתֹ֣ת הַשָּׁנִ֔ים תֵּ֥שַׁע וְאַרְבָּעִ֖ים שָׁנָֽה׃
And thou shalt number seven sabbaths of years unto thee, seven times seven years; and there shall be unto thee the days of seven sabbaths of years, even forty and nine years.
1) The verse seems unclear to me. What exactly was counted? Did they count each of the 7 years that comprise each Shemitah year?(i.e., did they count each of the 49 years; saying, "this is year 1; this is year 49"?) Or did they count only each grouping of Shemittah years (saying, e.g. "This is the 1st group of Shemitah years .. this is the 7th group)? Or did they count both?
2) Who counted - was it all farmers; every person who lived in Israel; someone else?
3) When was it counted - what date began the year?
4) Was a bracha said (similar to what is done for counting the Omer)? If so, what was the bracha? If not, why not?