Uses Estelle's javascript example on JSFiddle preset to 427 dice
Run script for at most time units (N.B should be milliseconds but seems to be more like tenths of a second)
Note, this uses the javascript Math.random algorithm. It is not true randomness but a decent simulation. For true randomness then try this page which lets you roll up to 60 dice. For instance for 471 rolls, do
RANDOM.ORG - Dice Roller - 50 dice
Click there nine times then one last time click here