It's not the nutrient content of the fertilizer that matters (although note that yours is a VERY nitrogen-biased one...); it's the CONCENTRATION. The actual number of nitrogen (etc) atoms you are putting on. (edited to clarify: if you are putting it on STRAIGHT, 8-1-1 has about the same N immediately available as 10-10-10, but the bottle may be wanting you to dilute the bejeebers out of it, which changes the situation)
For a very weak fertilizer, twice a week is perfectly reasonable.
For a fairly concentrated and/or time-release type fertilizer, twice a year is perfectly reasonable.
You could do some math, and see what it amounts to.
(Frankly, I am much more of a believer in building soil quality than in fertilizers as such, organic or not, although certainly they do have their place)
Good luck, have fun,
Pat