For each value below, enter the number correct to four decimal places.

Suppose an arrow is shot upward on the moon with a velocity of $47\frac{m}{s},$ then its height in meters after $t$ seconds is given by $h(t)=47t-0\mathrm{.}83t^2.$ Find the average velocity over the given time intervals.

$[7,8]$: $$

$[7,7\mathrm{.}5]$: $$

$[7,7\mathrm{.}1]$: $$

$[7,7\mathrm{.}01]$: $$

$[7,7\mathrm{.}001]$: $$