An investment plan includes purchasing at the beginning of the year a piece of machinery costing $117, which will be fully depreciated in the next year, and then salvaged with zero value. The profits for this year are estimated to be $179 (in actual dollars), and the combined tax rate is 15%.The real interest equals 0. What is the smallest inflation rate at which the overall investment is unprofitable (NPV = 0)? (Provide your answer as a number, not a percentage, with 0.01 precision.)