The natural number sequence 1, 2, 3, ..., n, ..., its nth group contains 2n-1 numbers, what is the sum of each number in the 10th group.
自然数列1，2，3，…，n，…，它的第n组含有2n-1个数，第10组中各数的和是多少．
<gadget id="calculator">82 + 100</gadget>
<output>182</output>

<gadget id="calculator">2 * 10</gadget>
<output>20</output>

<gadget id="calculator">20 - 1</gadget>
<output>19</output>

<gadget id="calculator">182 * 19</gadget>
<output>3_458</output>

<gadget id="calculator">3_458 / 2</gadget>
<output>1_729</output>

<result>1_729</result>