Use a glass to pour water into the empty bottle. If 3 cups of water are poured, the total weight of the bottle is 450 grams; if 5 cups of water are poured, the total weight of the bottle is 600 grams; if 8 cups of water are poured, what is the total weight of the bottle?
用一个杯子往空瓶中倒水．如果倒进3杯水，连瓶子共重450克；如果倒进5杯水，连瓶共重600克；如果倒进8杯水，连瓶共重多少克．
<gadget id="calculator">600 - 450</gadget>
<output>150</output>

<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">150 / 2</gadget>
<output>75</output>

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

<gadget id="calculator">75 * 5</gadget>
<output>375</output>

<gadget id="calculator">450 + 375</gadget>
<output>825</output>

<result>825</result>