Well, I reflashed Sharp ROM 2.38 to see if the problem was with OZ 3.5.1 and sure enough...
When I use Sharp, ZUC works fine and so does entering numbers and calculations in Hancom Sheet. In OpenZaurus 3.5.1, all the numbers are mixed up Hancom Sheet (I enter 777 in a cell and it shows me 14) and in ZUC, it's as I explained above.
Any OZ 3.5.1-ers out there know how to fix this?
Thanks,
Kent!