def show(lowerLimit, upperLimit):
    n = 0
    counter = lowerLimit
    while counter <= upperLimit:
        if counter % 3 == 0 or counter % 7 == 0:
            print(counter)
            n += 1
        counter += 1
    return n

print("First call")
m = show(1, 10)
print("Result:", m)
print("Second call")
print("Result:", show(11, 20))