Answer
4128840588600
Work Step by Step
We first choose 8 to go in the first van.
$$C(30,8)$$. Then we choose 11 for the 2nd. $$C(22,11)$$. The rest go in the last van.
$$C(22,11)*C(30,8) = \frac{22!*30!}{11!*11!*8!*22!}= 4128840588600$$
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