How did you validate your calculations? Because it seems there are some significant errors.
Assuming that "1494,97A" was a typographical error, and that you meant 1495 mA, you seem to have done the following:
(1495 mA)/(1 h) × (1 h/3600 s) = 0.42 mA/s
3200 mAh / (0.42 mA/s) / (720 h/month) = 10.6 month-seconds
So your numbers may be arithmetically correct, but there are serious errors in the units of measurement (and in the formulas used).
If your circuit draws approximately 1.5 A of current, then you will need a battery capacity of about 1 kAh (kilo-ampere hour) for every month that you want the circuit to be powered (i.e., 10 kAh for 10 months). So with your 3200-mAh batteries, you would need to connect over three-thousand such batteries in parallel to get a 10-month running time.