But I Need To Multiply Them!

Logic Level 1

123×4535 \begin{array}{ccccc} & & & 1 & 2&3\\ \times & & & & 4 &5\\ \hline & & \bigstar & \bigstar & 3&5\\ \hline \end{array}

Find the value that represents the symbol \bigstar .

Can you do it without multiplying the expression?

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