Megabytes per second is correct in this situation. Normally when you buy Internet speed it is calculated in bps or kbps but as speeds have increased it is now being discussed in Mbps. However, you will note that your computer reports speeds in MBytes per second. Thus a 5Mbps connection only yields 625K Bytes per sec. A 22.7 MBps connection would be 180Mbps (megabits) and generally you can't buy more than a 100Mbps Fiberoptics connection unless you are in the NOC.
Neat tool to do all the conversions and calculate outcomes.
http://www.t1shopper.com/tools/calculate/downloadcalculator.php
near as I can figure 1,976 megabytes of data is about 2 gb and the 87 seconds speed is nothing I can get from Comcast.
my speed tests done 08/10/2017 11:33 CDT:
Xfinity: 155 Mbps download - too funny !~ ( probably computer to Internet ? not to network ?)
AT&T: 87 Mbps
Ookla: 88 Mbps