How to take a value close to a cell?

[modo]

how to take a value close to a cell

1. I have a cell A1 contains the surface 6 Ha
2. j’i another cell A2 contains the number of sector 12.5
   for me I do not want half a sector that’s why I’ve been looking at a close estimate fortunately libreofice allows feire ca with the cell formatting
   the number becomes 13 this is great
   Now I want to calculate the area of the sector and for that I must
   divide the surface on the number of sector 13
   but the problem libreoffice take the original value was 12.5 despite 13: '(

[JohnSUN]

Try choose Tools - Options - LibreOffice Calc - Calculate and check Precision as shown

[modo]

yes that’s what I look for long. thank you very much
+100