also you can not put in Yeast and the yeast will grow up also because of spontaneous fermentation because the most flour contain natural yeast.
also i write to you you buy yeast as a product and only your product maker know how much do you need of this product thats why you can not ask me that you have to read your product paper!
now you know "usually recipes" only treat the reader like an idiot.
you have to read your product information.
traditional in Germany 1 tiny 1-2g pack-paper of yeast or bakery soda is for 500g flour
can you now please read your product informations ?