205+30.5=4X0n*m2q5R0s0t2v
100-99.8=9f:^-b2q5R0s0t2v
28.7-5.7=2q(Q7W3e;y.e'M2q5R0s0t2v
7.3+2.7=2v.]4w(n5n7\-\2q5R0s0t2v