The expression you provided is a bit unclear in its formatting. It seems like you're asking to perform operations involving the number 300, the number 5, and the number 3. I'll interpret it in a mathematical format.
Assuming you meant:
\[ 300 - 5 \cdot (3^2) + 1 \]
Let's break this down step-by-step:
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Calculate \(3^2\): \[ 3^2 = 9 \]
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Multiply by 5: \[ 5 \cdot 9 = 45 \]
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Substitute back into the expression: \[ 300 - 45 + 1 \]
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Perform the subtraction: \[ 300 - 45 = 255 \]
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Finally, add 1: \[ 255 + 1 = 256 \]
Thus, the result of the expression \(300 - 5 \cdot (3^2) + 1\) is \(256\).