A travel jug, after pouring 6 cups of water, the mass of the jug and water is 2000 grams, after pouring 8 cups, the total mass of the jug and water is 2600 grams, how much does this jug weigh?
一个旅行壶，倒进6杯水后，壶和水的质量是2000克，倒进8杯后，壶和水的总质量为2600克，这个水壶重多少克？
<gadget id="calculator">2_600 - 2_000</gadget>
<output>600</output>

<gadget id="calculator">8 - 6</gadget>
<output>2</output>

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

<gadget id="calculator">300 * 6</gadget>
<output>1_800</output>

<gadget id="calculator">2_000 - 1_800</gadget>
<output>200</output>

<result>200</result>