9.8 *1.1-5.14-4.896
=9.8×（1+0.1）-5.14-（5-0.104）
=9.8+0.98-5.14-5+0.104
=4.8+0.98-5.14+0.104
=5.78-5.14+0.104
=0.64+0.104
=0.744