Data for the Number of Containers Unloaded at the Port

Data for the number of containers unloaded at the Port of Shanghai is collected every day. Values for the last 7 days are to be used as the upper group in a semi-average calculation. Work out the average (mean) for this group (1 decimal place) : 85,235; 92,467; 63,287; 95,402; 86,263; 74,224; 89,123

A) 83714.4
B) 83714.5
C) 83714.0
D) 83714.3