from 0111 0011, then the answer is:
1 x 64 +
1 x 32 +
1 x 16 +
0 x 8 +
0 x 4 +
1 x 2 +
1 x 1 = 115
64 32 16 8 4 2 1 .5 .25 .125 .0625
0 ..0 ..0 .0 1 1 1 .0 ..0 ....1.......1 ........... = 4 + 2 + 1 + .125 + .0625 = 7.1875
1 x4
1x2
1 x1
0x1/2
0x1/4
1x1/8
1x1/16
so we get
4 + 2 +1 + 1/8 + 1/16
7.1875
111 = 4 + 2 + 1 = 7
.1 would be 0.5 (1/2)
.01 would be 0.25 (1/4)
.001 is 0.125 (1/8)
.0001 is 0.0625 (1/16)
so the fraction is 0.125 + .0625 = 0.1875