You pay $$1,000$ today for the following series of monthly cash flows:

$150$

$0$

$200$

$-15$

$300$

$300$

$0$

$100$

$100$

$200$

$-100$

What was the NPV of your decision to make this deal? $($Answer is close to $$200).*$Assume nominal annual discount rate of $12\%.*$

$($Edited to add discount rate.$)$