Auto-updating /clone coordinates with boundaries of range

I am using Minecraft to make a 3D detailed model of designs for a personal project and was wondering if there is a way to make the /clone equation automatically add or subtract 1 from the previous input to speed up the process. There would be limiters for the range, since I am using a range for 1010 blocks in the x axis by 122 in the z and 203 in the y directions. If i could automatically chain/repeat a command block to add (or subtract) 1 from the previous input, I could save myself a ton of repetitive work. Cloning one unit (25,013,660 blocks) takes me 3+ hours and it takes 2.5 minutes to clone 12 values (aka 1 foot). 

I feel this feature would be useful for mapmakers in general (or those working on personal projects) by allowing them to clone something already in existence to expand their work. Say they are building a city/landscape and they want to clone the infrastructure, but they can only do it 1 x value at a time. If they were able to set up a command block to simply add 1 to the last input they could greatly expand their city build an set a limit to +400 total to give them a much larger work area without having to manually go and edit it each time.

Maybe something like this exists, but I would like to see it vanilla for Java or to have a simple modpack from Microsoft that allows you to do so. 

Until then, I am off to clone 1010 x values to make an additional 15+ units to mu build...