1. Problem: What is 280% of 67? 2. Formula: To find a percentage of a number, use the formula $$\text{Percentage of a number} = \frac{\text{percentage}}{100} \times \text{number}$$ 3. Calculation: $$280\% \text{ of } 67 = \frac{280}{100} \times 67$$ 4. Simplify the fraction: $$= \cancel{\frac{280}{100}} \times 67 = 2.8 \times 67$$ 5. Multiply: $$2.8 \times 67 = 187.6$$ 6. Answer: 280% of 67 is **187.6**.