Excursion

people = int(input())
nights = int(input())
cards = int(input())
tickets = int(input())

total = people * (nights * 20 + cards * 1.60 + tickets * 6) * 1.25

print(f'{total:.2f}')


Или тарикатската:)

print(f'{int(input()) * (int(input()) * 20 + int(input()) * 1.60 + int(input()) * 6) * 1.25:.2f}')