Answer: 5 chips
======================================
Explanation:
Use your calculator to find that 89/6 = 14.8333 approximately
The whole part 14 means each of the six people get 14 chips
That means 6*14 = 84 chips have been eaten so far, leaving 89-84 = 5 chips left over for her sister.
----------
In other words,
89/6 = 14 remainder 5
which can be found through long division as shown below
