Order of precedence and associativity

[ahtello]

Code example:
'private int year = 2023;
private static int ToDecadeBeginning(this int year) => year / 10 * 10;'

According to order of precedence of operators and operator associativity in this documentation,
I think this expression would evaluate to 2023 / (10 * 10) = 20.
Instead it evaluates to (2023 / 10) * 10 = 2020.

Associativity of this precedence level:

x * y, x / y, x % y	Multiplicative

'*' and '/' are at the same precedence level, but with the left-to-right associativity I believe '10*10' would be evaluated before '2023/10'? What am I missing here? Why does '2023/10' get evaluated before '10*10'?

Can I get an explanation of why, or may it be a bug in VS Studio (2022 and Code)?

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Document Details

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• ID: 7eeac581-6235-2192-d909-e7fe3d21197f
• Version Independent ID: 9d8e2a57-1c18-8cba-9bd4-eef546fe2dcb
• Content: C# operators and expressions - List all C# operators and expression
• Content Source: docs/csharp/language-reference/operators/index.md
• Product: dotnet-csharp
• Technology: csharp-language-reference
• GitHub Login: @BillWagner
• Microsoft Alias: wiwagnx * y, x / y, x % y Multiplicative

[BillWagner]

Hi @ahtello

The associativity of operators describes the order of evaluation in a single expression. If every operator has the same precedence, the expression is evaluated left to right. For example a + b - c would be evaluated (a + b) - c, not a + (b - c).

This example works the same: / and * have the same precedence, so read the full expression year / 10 * 10 from left to righ: (year / 10) * 10.

I'll close this as an answered question

[ahtello]

Thank you for your answer.
I see now that it really means "read the whole expression from left to right."
I understood it like
"look at the line of associativity and apply those signs from left to right."
But now I know better, thank you.