Suppose a swapping system eliminates holes by compaction. If we assume that the holes and segments are randomly distributed and that about 80% of a 128 MB memory is currently "in use" as segments, then how long will it take to perform memory compaction? Assume that it takes 10 nsec to read or write a 32-bit word of memory. For simplicity, assume that the lowest word address (word 0) is part of a hole and that the highest address is part of a segment.