Prefer Math.DivRem

src/ImageSharp/Formats/Jxl/Processing/Decoder/JxlDecoderCore.cs

@@ -1530,9 +1530,10 @@ internal sealed class JxlDecoderCore : ImageDecoderCore, IDisposable
 
         long totalBits = bitReader.TotalBitsConsumed;
 
-        this.AdvanceCodeStream(totalBits / JxlMath.BitsPerByte);
+        (long div, long rem) = Math.DivRem(totalBits, JxlMath.BitsPerByte);
+        this.AdvanceCodeStream(div);
 
-        this.codestreamBitsAhead = totalBits % JxlMath.BitsPerByte;
+        this.codestreamBitsAhead = rem;
         this.gotBasicInfo = true;
         this.basicInfoSizeHint = 0;
         this.imageMetadata = this.metadata.ImageMetadata;