\[45\times \frac{3}{5}\]

1
Use this rule: a×bc=abca \times \frac{b}{c}=\frac{ab}{c}.
45×35\frac{45\times 3}{5}

2
Simplify  45×345\times 3  to  135135.
1355\frac{135}{5}

3
Simplify.
2727

Done

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