Total MB Round off

Round off the "Total" column for individual email accounts as they are currently difficult to read and produce more data than is needed for this scripts purpose.

For example, it is currently defaulting to awk's default of .6%f for the total amount of decimal places to display/use:

Email                                           In         Out         Logouts  Total
aaron.nevado@profesionalesasociados.pe          1300B      1042763B    93       0.995696MB
adriana.ramirez@profesionalesasociados.pe       5290B      11393086B   202      10.8703MB
alberto.espiritu@profesionalesasociados.pe      1255B      142238340B  29       135.65MB
alcides.giraldo@profesionalesasociados.pe       0B         0B          0        0MB
alex.terreros@profesionalesasociados.pe         1290B      97915063B   37       93.3803MB
ana.rios@profesionalesasociados.pe              1332B      13502756B   51       12.8785MB
andres.nieto@profesionalesasociados.pe          2872B      42725078B   97       40.7485MB