def add(num1, num2):
    """
    Sums two numbers
    :param num1: number
    :param num2: another number
    :return: the sum of the two numbers
    """
    return num1 + num2


def sub(num1, num2):
    """
    Subtracting num2 from num1
    :param num1: number
    :param num2: another number
    :return: the result of the subtraction
    """
    return num1 - num2


def mul(num1, num2):
    """
    Multiplies two numbers
    :param num1: number
    :param num2: another number
    :return: the result of the multiplication
    """
    return num1 * num2


def div(num1, num2):
    """
    Divides num1 by num2
    :param num1: number
    :param num2: another number
    :return: the result of the division
    """
    return num1 / num2
