If a number is divided by 2, 3, or 5, the remainder is 1. What is the smallest number?
一个数除以2、3、5余数都是1，这个数最小是多少．
<gadget id="calculator">2 * 3 * 5</gadget>
<output>30</output>

<gadget id="calculator">30 + 1</gadget>
<output>31</output>

<result>31</result>