Do you have any idea how I can do it?
Your question is ambiguous. What kind of computer your business needs? How would you access a "remote computer"? Do you need to access a computer from different places? Or do you need to work with a team on the same computer?
If you clarify your question I'll be more than happy to help.
Not sure what you mean by "rent a remote computer." There are services that rent computers located all over the country. Some will ship the computer wherever you need it. There are also companies that rent CPU time on shared computers (virtual machines) that could be anywhere.