For a 4-level cache and one main memory system, if the hit-ratio of level-1 cache is 40% and access time is 20ns, the hit-ratio of level-2 cache is 30% and access time is 100ns, the hit-ratio of level-3 cache is 20% and access time is 400ns, the hit-ratio of level-4 cache is 5% and access time is 600ns, and the access time of main memory 1000ns, what are CEAT and NEAT?