how to split a varient into two parts

hi all,

suppose there's a varient A. this varient is divided by decimal every three number from right to left.

for example, 123.456 ; 1.123.456 ; 123.456.789;

now i wanna split this value into two parts. convert 123.456 to 123 and 456; convert 1.123.456 to 1.123 and 456; convert 123.456.789 to 123.456 and 789.

could anyone tell me how to split this varient? Thanks in advance.