That's a binomial probability
On your TI-83 or 84
press 2ND VARS
Scroll down to binomcdf(
ENTER
[If you have the "wizard", you'll see]
trials:9
p:1/6
x value:2
Paste
ENTER
[or if you don't have the "wizard", type]
binomcdf(9,1/6,2)
ENTER
0.8217404057
Edwin