Conversation so far:
where was the first mcdonald's built in the usa
Kroc's first McDonald's restaurant opened on April 15, 1955, at 400 North Lee Street in Des Plaines, Illinois, near Chicago.
Where did the McDonald's business originate
What is now the biggest fast-food chain in the world began as a small hamburger stand in San Bernardino, California, 77 years ago on May 15, 1940.

Question: How many stores exist at the present time
Self-contained rewrite: How many McDonald's stores exist at the present time