I would like to say I was very dumb and typing the numbers completely wrong- thank you for correcting me actually

So here I've done both /auc sell and /zauctionhouse sell here is what it says btw

So I wanna sell a teddy bear aka Mr Choco and when I use the command it says I'm using the wrong command and gives me a different one to use and when I use the one it gives me it says THAT one is wrong so please someone correct my mistake-