Unit tasks and word count

[SexyGreyFox]

I'm an adult learner and only started going back to College last year and haven't come across this Word Count with school work before.
My task -
T1 Review your role, responsibilities and boundaries would be as a teacher in terms of the teaching/ training cycle 500-700 words

So this morning I'm a little bit daunted at how I'm going to write 500 words on the subject (let alone 700) while also using Harvard referencing which doesn't count.
After about an hour I finish and then highlight all the task minus the referencing and I've done 1368 words
It then took 30 mins to get it below 770 (somebody told me + or - 10%).
I'm sure the majority of you on here have had this problem.

Any useful tips so I don't waste all that time again?

 

[SexyGreyFox]

Thanks for the advice - cutting up sounds the way.
In the above task it would be cut up into 8 parts so around 96 words each (+/- 10%).