1) Draw a horizontal line.
2) Put a small vertical mark and label it 15.
3) Put another vertical mark to the right of the first and label it 16.
4) Put another vertical mark to the right of the second and label it 17.
5) Above the 15 mark, put +1000
6) Above the 16 mark, put +2000
7) Put 0.085 in both spaces, the one between 15 and 16 and the one between 16 and 17.
Truthfully, if you cannot draw this timeline, you may wish to have a VERY FRANK conversation with any academic advisor you can find. This is NOT encouraging.