Health Question

Engraved Obsidian Shield - Health =385
Obsidian Breastplate - Health = 476
Obsidian Helmet -Health=248
Worker’s Gloves-Health=5
Leather Belt-Health=5

385+476+248+5+5=1119
140% … 1119*1,4=1566,6
Why is Anya`s HP 1578 ?

Her base health with no armor is 11, and it rounds up to the nearest integer for display purposes.