$($IRR of an uneven cash flow stream$)$ Microwave Oven Programming, Inc. is considering the construction of a new plant. The plant will have an initial cash outlay of $$6\mathrm{.}7$ million $(=-$$$6\mathrm{.}7$ million$),$ and will produce cash flows of $$3\mathrm{.}5$ million at the end of year $1,$$$4\mathrm{.}2$ million at the end of year $2,$ and $$1\mathrm{.}5$ million at the end of years $3$ through $5.$ What is the internal rate of return on this new plant?

The IRR of the project is $\%.($Round to two decimal places.$)$