If the firm issued $20 million of debt at the beginning of the project, and if this debt takes the form of a perpetuity (i.e., it remains outstanding forever) with interest costs of 7%, what would be the present value of the "debt tax shield" generated from this project?

If the firm issued $20 million of debt at the beginning of the project, and if this debt takes the form of a perpetuity (i.e., it remains outstanding forever) with interest costs of 7%, what would be the present value of the "debt tax shield" generated from this project