def METHOD_NAME(n):
    "convert number into human readable string"
    if n<1000: return str(n)
    if n<800000: return "%.3fK" % (n/1000.0)
    if n<800000000: return "%.3fM" % (n/1000000.0)
    if n<800000000000: return "%.3fG" % (n/1000000000.0)
    return "%.3fT" % (n/1000000000000.0)