The sum of three consecutive natural numbers is 39, what is the largest of these three numbers
三个连续自然数的和是39，这三个数中最大的是多少
<gadget id="calculator">39 / 3</gadget>
<output>13</output>

<gadget id="calculator">13 + 1</gadget>
<output>14</output>

<result>14</result>