It is known that the sum of three consecutive natural numbers is 243, what is the largest of these three numbers?
已知三个连续自然数的和是243，这三个数中最大的一个是多少？
<gadget id="calculator">243 / 3</gadget>
<output>81</output>

<gadget id="calculator">81 + 1</gadget>
<output>82</output>

<result>82</result>