Thanks Quadrajeta, I am slowly getting better at it. Being a mathematician helps I believe.

Just yesterday I complained about the potential of north Korean and Iran's ability to deliver ammo will play into the planning of Ukrainian strategies and today ISW gave a detailed account of how those supplies have improved the Russian firing rate. It is still bad, but this is an issue to keep an eye on.

"Russia's domestic production of artillery shells, supplemented by increased ammunition imports from North Korea, will likely allow Russian forces to sustain sufficient rates of artillery fire in Ukraine in 2024, albeit at a relatively lower level than during 2022."---ISW today