原式=145*（92*10101）/(29*10101)-460*458/459 =460-460*458/459 =460*(1-458/459) =460*1/459 =1又1/459
145*929292/292929-460*458/459的简便计算求大神帮助
原式=145*（92*10101）/(29*10101)-460*458/459 =460-460*458/459 =460*(1-458/459) =460*1/459 =1又1/459