def calculate_progress(days):

    total = 0

    for i in range(days + 1):

        total += i * 2

    return total

print(calculate_progress(7))

t2 = 10, 20, 30, 40

print(eval("*".join(map(str, t2))))

s="The python language is a multimodel language."

print(s.split(' '))

for s in "HelloWorld": 

    if s=="W": 

        continue 

    print(s,end="")