2.73*1.67-0.96*0.75
=2.73*(2-0.33)-0.96*3/4
=2.73*2-2.73*0.33-0.24*3
=5.46-0.9009-0.72
=5.46-0.72-(1-0.0991)
=4.74-1+0.0991
=3.74-0.0991
=3.6409