A series of numbers are arranged according to the law: 1, 2, 3, 4, 2, 3, 4, 5, 3, 4, 5, 6, ..., counting from the first number, what is the sum of the first 100 numbers.
一串数按规律排列：1、2、3、4、2、3、4、5、3、4、5、6、…，从第一个数算起，前100个数的和是多少．
<gadget id="calculator">1 + 2 + 3 + 4</gadget>
<output>10</output>

<gadget id="calculator">100 / 4</gadget>
<output>25</output>

<gadget id="calculator">10 * 25</gadget>
<output>250</output>

<gadget id="calculator">25 - 1</gadget>
<output>24</output>

<gadget id="calculator">25 * 24</gadget>
<output>600</output>

<gadget id="calculator">600 / 2</gadget>
<output>300</output>

<gadget id="calculator">300 * 4</gadget>
<output>1_200</output>

<gadget id="calculator">250 + 1_200</gadget>
<output>1_450</output>

<result>1_450</result>