The number of cases of merlot wine sold by a Barossa Valley Winery in an 8-year period follows.

Year cases of wines

2003 270

2004 356

2005 398

2006 456

2007 358

2008 500

2009 410

2010 376

Referring to the information above, the Holt-Winters method for forecasting with smoothing constant of 0.8 for both level and trend will be used to smooth the wine sales. The smoothed value of the level series for 2005 is ________ (to 2 d.p.)