0.2□0.2□0.2□0.2□0.2=0.2
0.2□0.2□0.2□0.2□0.2=0
0.2□0.2□0.2□0.2□0.2=0.4
0.2□0.2□0.2□0.2□0.2=0.8
350.5=70;
352.5=87.5;
350.5=17.5;
352.5=14.
5-5=27