How many liters of water can a rectangular parallelepiped iron bucket without a lid be 2.5 decimeters long and 2.5 decimeters high and 35 centimeters high?
一个长和宽都是2.5分米，高是35厘米的无盖长方体铁皮水桶，能盛水多少升？
<gadget id="calculator">35 / 10</gadget>
<output>7/2 = around 3.5</output>

<gadget id="calculator">2.5 * 2.5 * (7/2)</gadget>
<output>21.875</output>

<result>21.875</result>