A stock had returns of 30%, 28%, and 14% for the last 3 years. The average return on the stock over this period was 24%. What was the variance of the stock's returns over this period?

Please do not round intermediate calculations. Round the final answer to 2 decimal places.

Please show all your steps that you take to resolve this. Please be very clear, so that I understand what steps you take. If typing, please bold your responses per step. Make sure to follow all rounding instructions.