According to statistics, the maximum heart rate should be 220 minus a person's age. how would you interpret your highest heart rate in relation to that given number?

I would interpret that explanation to mean that in order to calculate my maximum
heart rate, I should write down 220, then I should write my age under it, and finally
I should do the subtraction.

Once I had the answer, I should either memorize it or carry it around on a little slip of
paper.  Whenever I exercise or get excited, I should count my pulse, and take out
the little paper and compare the numbers.  If my pulse is running slower than the
number I calculated, then I am OK.  But if my pulse rate is a higher number than
what I calculated, then I should calm down and take it easy.

I should also remember to take ' 1 ' away from the number whenever I have a
birthday.

It would be 23 beats per second