Сколько крупной сельди солёной потребуется для приготовления 50 порций по 100 гр. сельди без головы и кожи с костями?

My favourite author it Esenin Sergey Alexander. Gave birth of Octobers (on September, 21), 3, 1895, in rural Konstantinovo to the province of Ryazanskoy in well-to-do peasant monogynopaedium. He has zbornik stikhov:pismo to the woman.  Sergey Esenin with a difference made off in 1909 from Konstantinovskoe zemskoe school, since church-teaching school, but, taught a good lesson there are one and a half years, went away from it - the profession of teacher attracted him little.  It is my favourite writer

My favourite author it Esenin Sergey Alexander. Gave birth of Octobers (on September, 21), 3, 1895, in rural Konstantinovo to the province of Ryazanskoy in well-to-do peasant monogynopaedium. He has zbornik stikhov:pismo to the woman.  Sergey Esenin with a difference made off in 1909 from Konstantinovskoe zemskoe school, since church-teaching school, but, taught a good lesson there are one and a half years, went away from it - the profession of teacher attracted him little.  It is my favourite writer