Answer
-17.595
Work Step by Step
$\ \ \ \ \ 2.3$
$\underline{\times7.65}$
$\ \ \ \ 115$
$\ \ 138$
$\underline{161\ \ }$
$17.595$
There are a total of 3 decimal places in the factors, so the result has 3 decimal places.
A negative multiplied by a positive is a negative.