def price_to_bookvalue(price, bookvalue_per_share):
    """Computes price to book value ratio.

    @params
    -------
    price: price per share
    bookvalue_per_share: book value per share, calculated by "total coomon stock value / tangible book value"

    returns
    -------
    Returns price to book value, int or float

    explanation
    -----------
    Market price of the company should follow the its tangible book value. Deviations from its tangible book
    makes the company overvalued and undervalued.
    """
    price_to_book = price / bookvalue_per_share
    return price_to_book
