A/9=23...B． How much should A be to maximize B?
A/9=23…B．要使B最大，A应是多少．
<gadget id="calculator">9 * 23</gadget>
<output>207</output>

<gadget id="calculator">9 - 1</gadget>
<output>8</output>

<gadget id="calculator">207 + 8</gadget>
<output>215</output>

<result>215</result>