全国行政事业单位固定资产知多少？据有关部门对全国乡、镇以上（含乡、镇）８２万多户国家行政事业单位的财产清查登记汇总统计，截至１９９２年末，全国行政事业单位的固定资产清查核实数为６１４５．９１亿元。查明全国行政事业单位房屋实有面积为２５０２５９平方米，... National administrative units know how much fixed assets? According to statistics compiled by relevant agencies on the inventory of property of more than 820,000 state administration units above the townships and townships (including townships and townships), as of the end of 1992, the verification amount of fixed assets of the administrative units nationwide was 614.591 billion yuan . Identify the actual administrative area of ​​the country housing an area of ​​250,259 square meters, ...