Precision in double
<p>I've got problem with precision in java. I have to calculate:</p>

<pre><code>a * b -c, where:
a = 5.454E14
b = 3.646E-40
c = 2.3
</code></pre>

<p>The score is <code>-2.3</code>. How I can solve it? <br>I don't want  to round up the score.</p>
