1. The problem is to find 200% of 18. 2. Recall that to find a percentage of a number, we use the formula: $$\text{Percentage of a number} = \left(\frac{\text{Percentage}}{100}\right) \times \text{Number}$$ 3. Here, the percentage is 200%, so we convert it to decimal by dividing by 100: $$\frac{200}{100} = 2$$ 4. Now multiply this decimal by the number 18: $$2 \times 18 = 36$$ 5. Therefore, 200% of 18 is 36. This means if you take 200% of 18, you get 36, which is twice the original number.