Give the empirical formula for the substance

Give the empirical formula for the substance whole molecular formula is Si2H6.
I don't remember how to do the empirical formula..
Can someone please give me a little review with explanation?

the empirical formula is simply a chemical formula in which the ratio's between atoms (the numbered subscripts) are in the lowest whole number ratio. In the case of Si2H6, the subscripts 2 and 6 are both divisible by 2, and the molecular formula can be simplified to SiH3 (the empirical formula)