7.7÷2.2
=77÷22
=3.5
1.2÷0.25+1.3×4
=120 ÷25+1.3×4
=4.8+5.2
=10
9.14×1.25-1.14÷0.8
=11.425-1.425
○=(2.25) △=(1.35)