Summoning..

The Summoning. I learned to do it so very long ago that it is now just second nature. My dad did it, my mom did it, both my paternal and maternal grandfather did it .Back in those days, this was considered man's work, luckily for me those days are past and I can do it without weird looks or judgement.
It's not difficult work, but it can be time consuming and mistakes are not tollerated. Small mistakes can get you sacked quickly, and depending on who you work for, larger mistakes can get you dead. Not really a great place to be when you are used to being alive.
Yeah, so, in answer to your question, I do the summoning and I do it well. I don't even use a calculator for the most part, just adding column after column of numbers in my head and outputting the answers...
Oh. Sorry? Summoning? Oh!! I thought... No! Of course I have nothing to do with summoning as in demons and devils! Please leave good sir! Good day to you!!!