n=0.507*444=225.1080
n=0.517*444=229.5480
n=0.527*444=233.9880
n=0.537*444=238.4280
n=0.547*444=242.8680
n=0.557*444=247.3080
n=0.567*444=251.7480
n=0.577*444=256.1880
n=0.587*444=260.6280
n=0.597*444=265.0680
最接近整数的是：n=597*444=265.0680
所以n=265
验证265/444=0.597