stockfish - Why do Engines show a fraction for the Depth and Current Node values? - Chess Stack Exchange

Forgive me if this has been asked elsewhere, but I've both Googled and searched here at CSE and cannot find an answer. When I'm using an Engine for analysis (in this case, Stockfish 15), I've noticed

Stockfish and Lc0, test at different number of nodes –

engines - How to download Stockfish and install it on the Fritz/ChessBase GUI? - Chess Stack Exchange

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In-Depth look at a chess engine: Stockfish explained : r/programming

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Stockfish does not understand this position. For humans this is very intuitive. : r/chess

PDF) Statistical analysis of chess games: space control and tipping points

stockfish - How many moves out do the static board evaluations use? - Chess Stack Exchange

Techniques used for stockfish engine selectivity? : r/ComputerChess

The neural network of the Stockfish chess engine

winboard - StockFish under WIndows 8 doesn't work - Chess Stack Exchange

How exactly does a chess computer work? - Quora