# How can equations be written more quickly?

Usually I write equations in questions/answers, but writing the equation in LaTeX takes up the most time. It takes me nearly three or four times as long to write them in LaTeX. Is there any way to make my equation writing faster? I already use a visual LaTeX editor to speed things up, but I'm wondering if there are other things I can try. Maybe a program that can convert common equations that are written down into LaTeX, kind of like OCR but from math into a language? (I'm not hopeful that there's anything like that, though).