Pay itself within 12 hours? Realy?
44,799,982,080 (EU) / 5120 (EU/t) = 8,749,996.5 t
8,749,996.5 (t) / 20 (t/sec) = 437,499.825 sec
437,499.825 (sec) / 3600 (sec/h) = 121.53 hours of daylight
If you don't skip night 121.53 + (121.53 * 7/8 ) ~ 228 hours of real time