System software is the answer.
You only put a numerical expression in numbers if it is over 100, it the calculation correctly.
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Partition is a logical drive. Large disks have to be partitioned in order to be structured. Knowing what partition is, partition gap refers to the unused space between partitions. It is also "Inter-partition<span> space" which</span><span> can be used to hide data on a hard disk. In this case a disk editor utility is used to access the hidden data in the partition gap.</span>