stuck on this question

An apple orchard claims that only 3% of its apples have brown spot. The apples are sold in lots of
2000. The orchard agrees to take back any lot that contains more than 80 apples with brown spot.
Find the approximate probability that any given lot is returned.

Kia ora FarooqAm
This is NOT an NCEA Level 2 question. It is associated with the Binomial Distribution which is to be approximated by the Normal Distribution. Also NOT in NCEA Level 3 either.