A two-digit number is a multiple of 2, 3, and 5 at the same time. What is the smallest two-digit number?
一个两位数同时是2、3、5的倍数，这个两位数最小是多少．
<gadget id="calculator">3 * 2 * 5</gadget>
<output>30</output>

<result>30</result>