* lost equipment costs basically 0 - they are mostly old hand-me-downs, the factories are not producing them anymore, so all the costs are already sunk; also the supply is plenty, so abandoning them is nothing; but let's be generous and say $100k / piece of equipment lost
* airplanes are more expensive, but again, this is old stock, there is plenty of them, and not incurring costs of producing more - let's say 10M per craft
* $1000 / day / soldier - this is absurd. They left the poor blokes in the cold with no fuel, military rations that expired in 1997 for food, and they rob the houses and stores they encounter for necessities; I'd say max $20 / day / soldier, and this is a country that average salary is $500 / month, so paying your soldiers $600/month is above average !
So in total this gets you 14M / day. Let's double that for the upkeep and then round up to 50M / day and you'll get a closer look at what the costs truly are like for Russia.
Basically the military in this invasion costs them spare change. The really costly bit is sanctions - in this context the lost at least 300B so far, with no end in sight. No wonder Putin is pissed.