1.8+0.5+0.2=2.5
(1.8-0.5)*0.2=0.26
1.8-(0.5-0.2)=1.5
(1.8+0.5)*0.2=0.46
1.8+0.5*0.2=1.9
1,8+0,5+0,2=2,5
(1,8-0,5)*0.2=0,26
1,8-(0,5-0,2)=1,5
(1,8+0,5)*0,2=0,46
1,8+0,5*0,2=1,9
1.8+0.5+0.2=2.5
(1.8-0.5)*0.2=0.26
1.8-(0.5-0.2)=1.5
(1.8+0.5)*0.2=0.46
1.8+0.5*0.2=1.9
1,8+0,5+0,2=2,5
(1,8-0,5)*0.2=0,26
1,8-(0,5-0,2)=1,5
(1,8+0,5)*0,2=0,46
1,8+0,5*0,2=1,9