1 gram of sugar is mixed with 9 kg of water to make sugar water, how much sugar accounts for the sugar water
1克糖和9千克水混合成糖水，糖占糖水的多少
<gadget id="calculator">9 * 1_000</gadget>
<output>9_000</output>

<gadget id="calculator">1 + 9_000</gadget>
<output>9_001</output>

<gadget id="calculator">1 / 9_001</gadget>
<output>1/9_001 = around 0.000111</output>

<result>1/9_001 = around 0.000111</result>