I think the first part means "if the outputs are null then do nothing.
I think the second part is converting to integer so the math operators are satisfied with their data type. After that I need the help. I think it means we are taking the footage outputs and dividing it by 5000 and considering the remainder. If the answer isn't zero then we take the footage and divide by 5000. Whatever that number is gets added to 1? Man, that can't be right. I would really love someone to put this in plain english.
If the answer is zero then its divide by 5000 else add 1 to div by 5000. That's what that logic says. In other words if the number is not zero then add 1 to div by 5000. What's this formula trying to do?
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