A rectangular parallelepiped glass aquarium measures 5dm in length and 3.5dm in width from the inside. The aquarium is filled with 25cm deep water. Put some goldfish in it, and the water level rises by 1cm. What is the size of these goldfish?
一个长方体玻璃鱼缸，从里面量长是5dm，宽是3.5dm，鱼缸中装了25cm深的水，明明把一些金鱼放到里面，这时水面上升了1cm．这些金鱼的体积是多少？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">5 * 3.5 * (1/10)</gadget>
<output>1.75</output>

<result>1.75</result>