Answer:
page 1:
51 years
$98.78
639546.64 (i think)
Page 2:
213 months
17.8 years
321 months
26.8 years
1128.9 months
88.8 years
I would probably choose the second plan because it's rather unlikely that i live past 90
Explanation:
page 1
Let's assume the payments are at the end of the month
66-15= 51 years
effective rate: .075/12=.00625

which i guess we can round to 98.78
700000-98.78*(51*12)= 639546.64
This number is really really high and so maybe you want to double check it
page 2
effective rate: .051/12=.00425

213 months
213/12= 17.8 years

321 months
321/12=26.8 years

1128.9 months
1128.9/12= 94.1 years
1066 months
1066/12= 88.8 years