Question about FEN code

I can interpret the FEN code below, all but the "3" and "38."

8/p7/8/1N2k2q/8/5n2/PPP5/1K1N4 b - - 3 38

Since I manually entered the pieces in the Arena software, the "38" cannot be the move number. Can someone explain what the 3 and 38 represent?

The 3 is the Halfmove clock: "This is the number of halfmoves since the last capture or pawn advance".

The 38 is the Fullmove Number: "The number of the full move. It starts at 1, and is incremented after Black's move."

https://en.wikipedia.org/wiki/Forsyth%E2%80%93Edwards_Notation

They are the halfmove clock and fullmove number:

Halfmove Clock

The next field of the FEN code informs how many moves both players have made since the last pawn advance or piece capture—known by chess programmers as the number of halfmoves. This field is useful to enforce the 50-move draw rule. When this counter reaches 100 (allowing each player to make 50 moves), the game ends in a draw.

Fullmove Number

The sixth and last field of the FEN code shows the number of completed turns in the game. This number is incremented by one every time Black moves. Chess programmers call this a fullmove.

Source: https://www.chess.com/terms/fen-chess

Thank you both for the clear explanation. Very helpful.