Answer:
0.904
Explanation:
You want the decimal version of "nine hundred four thousandths".
Reading decimals
A decimal fraction is read (expressed in words) as the number to the right of the decimal point followed by the place value of the least-significant digit:
0.2 = "two tenths"
0.34 = "thirty-four hundredths"
0.904 = "nine hundred four thousandths"
0.0008 = "eight ten-thousandths"
Fraction
The same reading applies to the number written as a fraction:
2/10 = "two tenths"
34/100 = "thirty-four hundredths"
904/1000 = "nine hundred four thousandths"
8/10000 = "eight ten-thousandths"
Each of these can be converted to a decimal by recognizing the meaning of the various parts of the fraction:
904/1000 = 904 × 1/1000
= 904 × 0.001 = 0.904
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Additional comment
When reading a decimal number that has an integer part and a fractional part, the location of the decimal point is often signified by the word "and":
"nine hundred and four thousandths" = 900 + 0.004 = 900.004
This suggests you need to be somewhat careful with the use of "and" when pronouncing a decimal number.