How much would you be willing to pay for one share of Juno if, all else equal, its dividend grows at 8% a year for the next 3 years, and then at a constant 6% forever?

Edit: The previous question and answer are the following:

Juno Mining Company current dividend (at time 0) is $0.50 a share. Its dividend growth rate is expected to be 8% a year forever. How much would you pay for a share if your required rate of return is 15%?

Expected dividend = $0.50*1.08 =0.54

Stock price = D1 / r - g
D1 = Expected Dividend
r= required rate of return
g= growth rate
=0.54/0.15-0.08
=7.71