I started this 1 or 2 years ago and decided to continue on it this month so here I am, having just finished it (I think). Basically you input a number and it generates an equation which starts with the number but ends with 1 after adding, subtracting, multiplying or dividing mostly random numbers. You can also choose the length/"complexity" of the equation (basically the number of terms I think is what you call it). Then you select a method through which it will output the equation and done. oh yeah and if you choose "costumes" to display the output the first character might not appear sometimes so uhhhh you could maybe guess what it was when you put it in your calculator. (assuming you'd do exactly what I'd do)
I don't think I used anything from other projects or sources. But I did start it like 2 years ago so uhhhhh probably not though. oh yeah the title is inspired by dr doofensmirtz I guess I could mention that here.