14.7+2.15*4.8
=14.7+（2+0.1+0.05）×4.8
=14.7+9.6+0.48+0.24
=25.02
或
=14.7+2.15*（2+2+0.4+0.4）
=14.7+4.3+4.3+0.86+0.86
=14.7+8.6+1.72
=25.02