When 866 is divided by a number, the quotient is 23 and the remainder is 15. What is the divisor?
866除以一个数，商是23，余数是15，除数是多少？
<gadget id="calculator">866 - 15</gadget>
<output>851</output>

<gadget id="calculator">851 / 23</gadget>
<output>37</output>

<result>37</result>