It wasn't hard. I just added 1 to 64.
I could have multiplied 7 by 10 then subtracted 5 but I referred it to my barber, Bill Occham, while he was shaving me and he said to always go for the simplest method. So 64 + 1.
How did you get 65 that's where I'm stock at explaining my answer how I got 65?
Obviously, 65 is the new "42"