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.
How many McDonald's stores exist at the present time
Global foodservice retailer McDonald's operated and franchised a total of 38,695 restaurants worldwide in 2019. This figure has seen a year-on-year increase for the last 13 years.

Question: How many in the U.S.A
Self-contained rewrite: How many McDonald's branches are there in the U.S.A