Calculate|Determine|Compute|Estimate|Work out} {the average|the  typical|the common|the normal|the standard} of all {four|4} readings  by {adding|including|incorporating|introducing} {them all|all of  them} up, {and then|and after that|after which|then|and  afterwards|after which you can} divide this sum by {four|4}. {Since  you|Because you} {already|currently|presently|previously|by now| now} {used|utilized|employed|utilised|applied|made use of} a  {digital|electronic} {balance|stability|harmony|equilibrium}, {the  quantity|the amount} you {come|arrive|appear|occur} up with is  {already|currently|presently|previously|by now|now} {near|close  to|around|in close proximity to|in the vicinity of} {accurate| correct|precise|exact}. {If you|In the event you|Should you|In case  you|When you|For those who} {used|utilized|employed|utilised| applied|made use of} a {manual|guide|handbook} {balance|stability| harmony|equilibrium}, {though|although|even though|however|while| nevertheless}, {you will need to|you will have to|you need to|you  have got to|you must} {add|include|incorporate|insert|increase} {1| one}.06 milligrams {per|for each|for every} gram {to the|towards  the|for the|on the|to your|into the} {average|typical|common| regular|normal|ordinary} mass. {This is|This really is|This can be| That is|This is certainly|This is often} {to accommodate|to support}  the {space|area|room|place|house} {that was|which was} taken up by  air {during|throughout|in the course of|for the duration of| through|all through} the {initial|preliminary|first|original} weighing.