Step 1: Start with the fraction 57/7.

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

57 ÷ 7 = 8.1429

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

8.1429 × 100 = 814.29%

Final Answer: 57/7 as a percentage is 814.29%.