Danny for the digits either side of cleared:
86.....The first two digits are the runway designator. If there are parallel runways the left hand one gets the normal runway designation and the right parallel has 50 added to it. So 36L would get 36........ while 36R would get 86........ If 88 is used the information applies to all runways
......70 this is measure of the braking coefficient. Braking coefficients of .40 and above are good.