A rаdiоgrаpher wаs standing at a distance оf 1 meter frоm a fluoroscopic x-ray tube. Unfortunately, the X-ray tube was defective and there was leakage radiation through the metal housing causing the radiographer an occupational exposure of 12 mSv. per 1 minute. What is the radiographer new occupational dose if he backed up his distance to 2 meters but was there for 4 minutes?