Measure Remaining Gap Length

dealing with trim carpentry here. So, quick and dirty. I've got a piece cut to an angle here. Boom. To my long point, 10 in. My assistant over here has the same thing. Keep your piece there. You good right there? Mhm. Got 94. Add 20. 114. Cut it. Should fit. Is it going to fit? I don't know. We'll see.