Step 1: Start with the fraction 42/18.

Step 2: To convert a fraction into a percentage, divide the numerator by the denominator.

42 ÷ 18 = 2.3333

Step 3: Multiply the result by 100 to get the percentage.

2.3333 × 100 = 233.33%

Final Answer: 42/18 as a percentage is 233.33%.