Note that the debt repayments for the 4 quarters this year are...

Note that the debt repayments for the 4 quarters this year are $4M, $5M, $6M and $5.192M (all $20.192M outstanding.
Also, to calculate the revenue for the hedging component you would use the difference between the hedging price and cost price per ounce (so $200 in your example and not $75).

Agree with Kojak that the rest of the year will be tight but we may have the following positives to consider:

AISC for Dec 17 quarter were probably a little higher than we may see in Mar and Jun 18 quarters based on the additional mining and stockpiling activities.

Stockpile value and ounces at the refinery will increase with increasing POG.

Current POG significantly higher than $1275 last quarter.

Debt will be paid off by end of 2018.

Potential for capital injection from Casposo sale.

To consider a few risks:

By my calculations TRY still need to mine 70 k ounces and then process.some stockpiled ore this year to ensure they meet their liquidity requirements and debt repayments. (Based on Dec 17 Qtr pricing and costs).

Exploration costs will need to be managed carefully.

Overall, a positive quarterly report. Another step in the right direction.