Default

הוא1,350ק"מ, בין

Letter spaced

הוא1,350ק"מ, בין

The red portion runs from the beginning of the text to the middle of the numeric value. Note how letter spacing is applied at the direction change, one side has two spacings, the other zero.

Bug: Webkit browsers always incorrectly apply letter-spacing to the right of the glyph, independent of direction.

Source: Wikipedia page for United Kingdom