try using online calculator to calculate .24224-(1/4-1/100+1/400-1/4000-1/100000), you should get 0. I need to use this to calculate calendar math. and ttcalc/ttmath messes up.
oh, I finally saw the exponent, it's -309...
-2.781,342,323,134,001,728,862,790,896,665,505,080,274,019,9 75,577,914,788,191,659,271,109,005,543,517,397,744,817,853,9
48,765,638,775,705,084,174,663,794,763,756,440,542,701,941,8 25,136,070,015,481,722,148,526,413,472,491,915,002,913,099,5
12,684,303,229,545,089,901,956,308,678,129,667,760,469,063,5 08,313,270,822,698,685,900,613,974,960,739,549,560,625,794,8
85,962,647,881,093,499,726,109,692,187,436,814,476e-309
so it's good. I guess. really should be zero.