Guppy babies question...?

I have 2 male and 2 female guppies in a tank with an african dwarf frog, and an algae eater. one of my females just had 7 babies and my other female is pregnant. they're all together in a 10 gallon tank with one plant and power filtration. i have been feeding all the fish crushed flakes. what are the chances that the baby guppies will survive with all the adult fish? and how many babies should i expect in the next few months with 2 male and 2 female?