What is your source of numbers? From what I understand, since Russia attacked in Feb 2022, the USA has provided approximately $44.2 billion in military assistance. If one adds in the estimated $47 billion in military assistance since Russia's initial invasion of Ukraine in 2014, you are still coming up to less than $100 billion. If you are surprised that the war costs that much than you need to educate yourself what modern war takes.
I would also argue that a lot of that aid $ actually stays in the countries in question or at least generates work/jobs there since it goes to companies/factories etc producing the weapons etc. It isn't just a case of sending bundles of cash as some would try to have you think.
Finally, if one wants this to end/get a faster result, stop drip feeding the support. Instead of making the Ukrainians beg for weapons/support and then giving them just enough to keep their 'heads above water', given them what they need to win. e.g. instead of 31 Abrams MBTs, give them 310! Why make them wait 2+yrs for F-16s?
See above comments. Also remember that in terms of % GDP, the USA is not actually giving the most.
Finally a question: Is there a timeframe you expect and then willingly walk away and let Russia win? Because that's is what Putin is counting upon.