[Client] Trundle Tooltip showing 27.500000000000004% on Web

I noticed on the webpage for Trundle that his ultimate has a strange number:

> Trundle drains 20/27.500000000000004/35 (+2% Ability Power)% of an enemy champion's maximum Health as Magic Damage and 40% of their Armor and Magic Resist, half immediately and half over 4 seconds. The Armor and Magic Resist is returned 4 seconds after the drain ends.

Is the extra 0.000000000000004 intentional? If so, has it ever been the difference between a kill and no kill?