There are three types of questions in the question bank, the number of which is 30, 40 and 45 respectively. Each test should take one of the three types of questions to form a small test paper. The question bank can form such a small test paper How many?
题库中有三种类型的题目，数量分别为30道、40道和45道，每次考试要从三种类型的题目中各取一道组成一张小试卷，问该题库共可组成这样的小试卷多少张？
<gadget id="calculator">30 * 40 * 45</gadget>
<output>54_000</output>

<result>54_000</result>