copying equations using calc formulae

Hallo,
I’m thinking of building a test using libre office calc.
To do so I have to repeatedly copy equations created with libre office math from one cell to another using possibly a calc formula and relative indexing of cells.
But formulas don’t copy equations.
How can I accomplish such a task?
Thank You

I see no way (LibreOffice 6.3.6.2 (x86)).