A small wooden barrel is poured into 5 bowls of water. The total weight of the wooden barrel and water is 2 kg. When 8 bowls of water are poured into it, the total weight is 2600 grams. How many grams does the small wooden barrel weigh?
一只小木桶倒进5碗水，木桶和水的总重量是2千克，倒进8碗水时，总重量是2600克，小木桶重多少克？
<gadget id="calculator">2 * 1_000</gadget>
<output>2_000</output>

<gadget id="calculator">2_600 - 2_000</gadget>
<output>600</output>

<gadget id="calculator">8 - 5</gadget>
<output>3</output>

<gadget id="calculator">600 / 3</gadget>
<output>200</output>

<gadget id="calculator">200 * 8</gadget>
<output>1_600</output>

<gadget id="calculator">2_600 - 1_600</gadget>
<output>1_000</output>

<result>1_000</result>