How to take care of long number and digital Carry issue? For example, Longtitiude from GPS Device

Hi , 

I have a number as longtitude input

43.219567,

in appian I sign this number to local variables ,in out put i see the number become 43.21957

I tried to number * 100 but still i got 4321.957.

How can I save all digital position in my local vairable?

Thanks