The phrase "about how instances" is correct and usable in written English.
It can be used when discussing the nature or characteristics of specific occurrences or examples in a particular context.
Example: "The report focuses on about how instances of climate change have affected local ecosystems."
Alternatives: "regarding how examples" or "concerning how cases".
Jeff McDonald, Vice President of the NEM Foundation examined Coincheck's situation carefully and speaks about how similar instances can be avoided in the future.
Carter refused to provide details about how many instances of voter fraud police have found, or the exact nature of the fraud — whether investigators found, for example, cases of people registering to vote multiple times or whether those ineligible to vote tried to register.
Sometimes she'll sit down and idly comment about how, for instance, "in Minecraft, you can't really sit down," but she's just downloaded a mod that allows for a sort of almost-sitting-down, which made her actual act of sitting down somehow now so much more relevant, if not more real.
The benefits of exercise for the heart have long been touted, but little is known about how, for instance, jogging protects blood vessels against cardiovascular disease.
There's a lot we can't say for certain about how, for instance, ocean currents will change, and those currents have a huge effect on weather patterns.
The international dimension of secession also carries with it many unanswered questions about how, for instance, Khartoum and Juba (the would-be capital of a state emerging from South Sudan) will form new alliances, and reject or reinforce old ones.
So rather than singing about how terrible, for instance, David Cameron is, a modern cabaret performer might search out a song written a century ago that lampoons some long-forgotten, but intensely loathed, authority figure from the past.
Trump himself has often called for getting information about potentially destabilizing situations before making any final decisions about how to proceed for instance, with respect to immigration from certain war-torn Middle Eastern countries, or as to the utility of waterboarding, or even on the very subject we're now discussing as a nation: potential voting irregularities in the United States.
How about, for instance, a story about a big accounting firm shredding a client's internal documents?
He says some smart things about Fitzgerald's imagery — about, for instance, how ambiguous the idea of light is in his writing, so that the green light at the end of the dock is a portent of the shining illusory screen of the movies, standing for persistent illusion as much as for romantic aspiration.
