Find \( \frac{3}{7} \) of 280 by multiplying.<br><br>
&bull; \( \frac{3}{7} \times 280 = 3 \times 40 = 120 \)<br>
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Final Answer: 120<br>
Check: \( 280 \div 7 = 40 \) per unit. 3 units = 40 × 3 = 120. ✓