およそ三百人来た

N3 およそ oyoso about, roughly, generally N5 三 san three N5 百 hyaku one hundred N5 人 hito person, people N3 来 rai next, coming, prefix for time

N5 三 san, zou / mi, mi.tsu, mitsu.tsu three, trois, tres N5 百 hyaku, byaku / momo hundred, cent, cien N5 人 jin, nin / hito, -ri, -to person, être humain, personne N5 来 rai, tai / ku.ru, kita.ru, kita.su, ki.tasu, ki.taru, ki, ko come, due, next

N5 〜よ yo Sentence ending particle adding information to listener, emphasizes statement, expresses certainty or warning