If the sum of three consecutive natural numbers is 27, what is the sum of the squares of these three numbers?
三个连续自然数的和为27，则这三个的平方和为多少．
<gadget id="calculator">27 / 3</gadget>
<output>9</output>

<gadget id="calculator">9 - 1</gadget>
<output>8</output>

<gadget id="calculator">8 ** 2</gadget>
<output>64</output>

<gadget id="calculator">9 ** 2</gadget>
<output>81</output>

<gadget id="calculator">9 + 1</gadget>
<output>10</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">64 + 81 + 100</gadget>
<output>245</output>

<result>245</result>