Simple math calculations in Panels

Up to this version you could do simple math calculations in panels. For example if someone sent me am image at 2000 pixels wide at 100dpi I could quickly make a rough convertion by putting /3 after the 2000 and changing the dpi to 300. Just a little thing but was extremely helpful and doesn't seem to work in this Beta version. at least not the Mac 24.7.0 version.