According to the BBC website Live feed: "According to a post on [Ukraine's] Facebook page, more than 3,500 Russian soldiers involved in the invasion have been killed and almost 200 taken prisoner."
If the reports are accurate, this would be a substantial number. I feel sorry for Russian kids killed because their president is a maniac. But we need more of them to be killed in order to demoralise the Red Army and to turn the tide.
BBC again: "They add that Russia has also lost 14 aircraft, 8 helicopters, and 102 tanks so far. The BBC is unable to independently verify any of these claims."
Tank losses are impressive. The handheld rocket launchers work well. Rather fewer helicopter losses than I'd have hoped.