How do `+` and `*` build and stretch strings — and why is `"3" * 5` nothing like `3 * 5`?
Short drills on what this video just taught. Write the code, run the checks, and reveal the answer only if you are stuck.
You are given first = "Ada" and last = "Lovelace". Build the full name
"Ada Lovelace" — first name, a single space, then last name — and assign it to
full_name. Remember: + inserts no space of its own.