Step 1: Start with the fraction 40/7.

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

40 ÷ 7 = 5.7143

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

5.7143 × 100 = 571.43%

Final Answer: 40/7 as a percentage is 571.43%.