Average Without Sum

Write def average_of(values: list[float]) -> float that returns the average of the numbers in the list, which always has at least one element, without using the built-ins sum or len: loop over the list once, adding each value to a running total and adding one to a counter, then return the total divided by the counter. Do NOT write a main block or any top-level test code; the tests construct the calls. Input: a count on the first line, then that many decimal numbers one per line; the tests read them, build the list, pass it to your function and print the value it returns as Python prints a float.