[R] Finding a probability

[rr400]

Hi, i am trying to determine a certain probability and i am unsure if the
commands i have entered into R are correct. 
I am trying to determine how unusual it would be to find something with the
value 417 for a set of numbers with mean 1454.190 and standard deviation
162.6301. The command i entered was:
>pnorm (417, 1454.190, 162.6301)
Which returned:
[1] 8.99413e-11
I am unsure how to interpret this number as it is, and hence whether i have
entered the appropriate commands for what i am trying to find out. If the
commands are correct, how can i simplify the answer to understand the
probability?

Thanks in advance, R.


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