No, you don't. They never taught that in school. It's not PEDMAS it's PEMDAS. It's 2 and I'm sticking to it. I knew every teacher from elementary to college taught me correctly. I remember specifically sitting in class and watching teachers solve throughout the problem all the multiplications first and then starting over and continuing doing division throughout, then addition throughout, then subtraction. Yeah, you work left to right, but you start each step left to right using PEMDAS. I gotta go to bed now though. I'm done for now.