A number is a multiple of 3, a multiple of 2, or a multiple of 5. What is the smallest number?
一个数既是3的倍数，又是2的倍数，还是5的倍数，这个数最小是多少．
<gadget id="calculator">3 * 2 * 5</gadget>
<output>30</output>

<result>30</result>