用0.4453125不断乘16取整数，肢神纳到0为止历没。0.4453125×16=7.125☞70.125×16=2.0☞20.0☞0所以瞎蔽是0.72
0.4453125(十进皮腊制)=7x16^(-1) +0.0078125=7x16^(-1) +2x16^(-2)=0.72(十六进察握帆败雹制)
(0.4453125/10)x16=0.7125
