private String formatFileSizeString(final long value, final long divider, final String unit) {
        final double result = divider > 1 ? (double) value / (double) divider : (double) value;
        return new DecimalFormat("#,##0.#").format(result) + " " + unit;
    }
Formats the input value as a file size string.

@param value   The value to format.
@param divider The value to divide the input value by.
@param unit    The output units.
@return The formatted file size string.
core/src/main/java/com/filebrowser/FileBrowserEngine/FileBrowserEngine.java