Download daily returns for each of these equities for 2012-01-01 to 2016-12-31 from the data center and aggregate the daily returns to weekly returns using compounding method. This is the numbers for the first week:

2012-01-03	0,015391
2012-01-04	0,003221
2012-01-05	-0,01152
2012-01-06	-0,005541

According to my teacher the answer for this week is supposed to be: 0.001347213. Please show me the formula for excel.