Students A, B, and C all like to collect stamps. A has 24 stamps, and B has A's stamps (3/4). The ratio of C's stamps to B's stamps is 3:2. Who has the fewest stamps? How many sheets are there?
甲、乙、丙三位同学都喜欢集邮，甲有邮票24张，乙的邮票张数是甲的(3/4)，丙的邮票张数与乙的邮票张数的比是3：2，谁的邮票最少？是多少张？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">24 * (3/4)</gadget>
<output>18</output>

<result>18</result>