Exercise 5: A Currency-Formatted Total — Possible Solution
====================================================================

prices = [12.5, 3.25, 7.995]

total = 0
for price in prices:
    total += price

print(f"Total: £{total:.2f}")

Output:
Total: £23.75

WHY THIS WORKS AS AN ANSWER
------------------------------
Summing 12.5 + 3.25 + 7.995 gives 23.745 exactly. The :.2f format
specifier tells Python to display the value with exactly two decimal
places, and it ROUNDS to get there rather than just chopping off
extra digits — 23.745 rounds to 23.75 (rounding the 5 up), not 23.74.
This is why the specifier is applied only at print time: total itself
still holds the full-precision 23.745 in memory, and only the
displayed text is rounded.