Have you ever heard the saying "the tip of the iceberg"? Only a small part of the iceberg is exposed on the water surface, and most of it is hidden under the water surface. Assume that the volume of an iceberg is 1000m**3, and its volume above the water is 100m**3. What fraction of the volume of iceberg dew above the water is the volume below the water?
你听过"冰山一角"的说法吗？冰山露在水面上的只是小部分，大部分隐藏在水面下．假设一座冰山的体积是1000m**3，它露在水面上的体积是100m**3．冰山露在水面上的体积是水面下的体积的几分之几？
<gadget id="calculator">1_000 - 100</gadget>
<output>900</output>

<gadget id="calculator">100 / 900</gadget>
<output>1/9 = around 0.111111</output>

<result>1/9 = around 0.111111</result>