Suppose that you have found the optimal risky combination using all risky assets available in the economy, and that this optimal risky portfolio has an expected return of 0.13 and standard deviation of 0.22. The T-bill rate is 0.02. What fraction of your money must be invested in the risk-free asset in order to form a complete portfolio with an expected return of 0.09 ? Round your answer to 4 decimal places. For example, if your answer is 3.205%, then please write down 0.0321