It's impossible to solve all that you give but I think I can help you. There are many different sites which have soft that can solve tasks like this. Just enter what you need in search bar and follow the first link you see.
Answer:
7777777777777777777777777777777777777777777777777777777777
Step-by-step explanation:
Any number multiplied by 1 is itself.
Answer:
15/s
Step-by-step explanation:
15 caps ÷ s = 15/s caps per swimmer