A PARTS file with Part# as hash key includes records with the following Part# values: 2369, 3760, 4692, 4871, 5659, 1821, 1074, 7115, 1620, 2428, 3943, 4750, 6975, 4981, 9208. The file use eight buckets, number from 0 to 7. Each bucket is one disk block and holds two records. Load these records into the file in the given order, using the hashing function h(K) = K mod 8. Calculate the average number of block accesses for a random retrieval on Part#.