Six thousandths.
.006
0+.90+.006
You must form the word POST. There's no need to turn the pieces. It is pretty straightforward
4+.100+.090+.006
40+9+.03+.006
4+.1+.09+.006
0.06 = six hundredths.
006 (ignore the noughts)
100+60+9+.8+.03+.006
0.01% of 006 = 006*0.01/100 = 0.0006
0.00006 or .006%