When 9 divides a number, the quotient is 4 and the remainder is 3. What is this number?
9除一个数，商是4，余数是3，这个数是几？
<gadget id="calculator">9 * 4</gadget>
<output>36</output>

<gadget id="calculator">36 + 3</gadget>
<output>39</output>

<result>39</result>