Sure, let's solve the given expression step by step:
Given expression:
[tex]$
\frac{9-4}{78,942}-18
$[/tex]
1. Start by simplifying the numerator:
[tex]$
9 - 4 = 5
$[/tex]
2. Now, substitute the simplified numerator back into the expression:
[tex]$
\frac{5}{78,942} - 18
$[/tex]
3. Perform the division:
[tex]$
\frac{5}{78,942} \approx 6.333764029287325 \times 10^{-5}
$[/tex]
4. Subtract 18 from the result of the division:
[tex]$
6.333764029287325 \times 10^{-5} - 18 \approx -17.99993666235971
$[/tex]
5. Round the final result to 3 decimal places:
[tex]$
-17.99993666235971 \approx -18.0
$[/tex]
So, the rounded answer to 3 decimal places is:
[tex]$
\boxed{-18.0}
$[/tex]
