As mentioned above you can run php code in the alert templates. Try using the php function number_format() - this is what I use to round disk spaces on my disk space alert template, otherwise I would get about 10 decimal places.
@foreach ($alert->faults as $key => $value)
Download: {{ number_format((($value['ifOutOctets_rate']*8)/$value['ifSpeed'])*100*100,1) }} Mbps
Upload : {{ number_format((($value['ifInOctets_rate']*8)/$value['ifSpeed'])*100*100,1) }} Mbps
@endforeach
The second argument to number_format() specifies how many decimal places you want.
PS yes I know I’m replying to a 2 year old thread but someone may find this useful.