You can actually use Excel or other programs like that to generate a random number, and then roll it as many times as necessary. Here is the formula.
=INT(RAND()*(X-1)+1)
where X is the number you need to roll +1 (so for rolling 75, you actually enter 76). Cut & paste the formula as many times as you need to roll it.
You can even have the computer add these numbers by setting them all up in a column. The formula is :
=SUM(X1Y1:X2Y2)
where the X1Y1 are the value of the first cell, while X2Y2 is the value of the last cell. Remember, they have to be in a column or a row.
Hope that helps a little.
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