How many different five-digit numbers can be formed with two 1s, one 2, one 3, and one 4?
用两个1、一个2、一个3、一个4可以组成多少个不同的五位数？
<gadget id="calculator">10 * 3 * 2 * 1</gadget>
<output>60</output>

<result>60</result>