When a number is divided by 4, the remainder is 3, and when divided by 7, the remainder is 2. What is the smallest number?
一个数除以4余3，除以7余2．则这个数最小是多少？
<gadget id="calculator">4 * 7</gadget>
<output>28</output>

<gadget id="calculator">28 - 3 - 2</gadget>
<output>23</output>

<result>23</result>