My cats keep pooping on the floor

So I have 5 girl cats and I recently (back in like October) got two more and one of them poops on the floor… EVERYDAY even though they have enough litter boxes and clean litter. What do i do? because that’s gross and i want that to stop immediately. They are all very playful and aren’t sick or anything but Idk? this just randomly started and i don’t like it

Species: Cat • Age: 1 year • Sex/Neuter status: Female - Unspayed • Breed: British Shorthair (i believe) • Body weight: 7.5IBS • History: N/A • Clinical signs: N/A • Duration: 4 months