The trick with the economics of nuclear is that building it is the main cost, once the plant is operable the cost is much lower than other sources. So by the time you have a working plant, you might as well use it to get value out of it since you have already paid for it.

Java/C# would have types before the variables:

double sum = 0d;
for (int i = 0; i < 4; i++)
	sum += 3 * i;```