def METHOD_NAME(length_in_inches, force_in_pounds):
    """
    英寸 in 转换成毫米 mm 
    磅 lb 转换成牛顿 N
    """
    length_in_mm = length_in_inches * 25.4
    force_in_newtons = force_in_pounds * 4.44822
    return length_in_mm, force_in_newtons