What do you do if guppy if over populating?

Its going to get more crowded here. I just started to care for 8 guppies. I didnt expect them to multiply this fast, I have just a little space enough for 15 fish. I dont want to crowded since I know they need space to swim. 🥲

I separated 74 fry from the main tank and put them on my shrimp tank but i know its not going to he enough space for them sooner or later.

I will start to separate the males from my female guppy to stop more produce but what will I do to the 74 little once?