The dividend is 715, the quotient is 23, and the remainder is 2. Then, what is the divisor?
被除数是715，商是23，余数是2，那么，除数是多少．
<gadget id="calculator">715 - 2</gadget>
<output>713</output>

<gadget id="calculator">713 / 23</gadget>
<output>31</output>

<result>31</result>