Please do not use Excel to show the answer, thanks

A company has the following cash flow: Year 12 | 3 | 4 | 5 | Cash Flow ($1,000,000) - 70 33 92 -15 -12 If the external investment rate for this company is 16%, what is the company's external rate of return? Use ROIC method. A company has the following cash flow: Year 12 | 3 | 4 | 5 | Cash Flow ($1,000,000) - 70 33 92 -15 -12 If the external investment rate for this company is 16%, what is the company's external rate of return? Use ROIC method