Starting from 1, from small to large, they are grouped repeatedly in the order of one number, two numbers, and three numbers. What is the sum of the numbers in the hundredth group?
从1开始由小到大按一个数、两个数、三个数的顺序重复不断地分组，那么第一百组中数的和是多少？
<gadget id="calculator">100 - 1</gadget>
<output>99</output>

<gadget id="calculator">6 * 99</gadget>
<output>594</output>

<gadget id="calculator">594 + 1</gadget>
<output>595</output>

<gadget id="calculator">595 + 596 + 597 + 598 + 599 + 600</gadget>
<output>3_585</output>

<result>3_585</result>