You literally explained it:
>I know I can just x0.017 for each value
So your first value is 65°
And then you said 65°·0.017
And then 65°·0.017·0.017
65°·0.017·0.017·0.017
Can these be written in a **shorter** way? If yes, how would you get the temperature difference after 7 minutes? 15 minutes? n minutes?