OK--never did make a good grade in math. Problem, I have a pattern for a 'Super fast jelly roll quilt' where you sew end to end and keep cutting it in half till you finish with a 50 x 64 using the whole jelly roll. If I wanted to make one about 36 x 44 or something close to that. How many strips would I have to sew together? I don't want to waste and cut it to size using the whole jelly roll. Thanks in advance if you can help me.