It is known that the sum of 9 consecutive natural numbers is 315, so what is the largest number among them.
已知9个连续自然数的和是315，那么其中最大的一个数是多少．
<gadget id="calculator">315 / 9</gadget>
<output>35</output>

<gadget id="calculator">35 + 1 + 1 + 1 + 1</gadget>
<output>39</output>

<result>39</result>