Data format conversion to export from a .csv file to excel

Hey! I have a file full of resistor value variations obtained from a Monte Carlo analysis. The format of the values is the following: "9.91536e-01". The problem is that qhen i import this values in excel, this same value appears to be "99153.6", instead of the "0.991536" value.

I know its because the format doesnt read the "." as a decimal separator. I've tried changing it but the problem keeps happening.