If you have ten beats over a six seconds period, you have to calculate for the number of beat you will have in one minute.
One minute is equivalent to sixty seconds,
if you have 10 beats in 6 seconds, then in 60 seconds you will have
60/6 * 10 beats = 10 * 10 = 100.
Thus, you will report 100 beats per minute heart rate to your team.