1 kg of salt is dissolved in 9 kg of water, what is the percentage of salt in the brine
1千克盐溶解在9千克水中，盐占盐水的多少
<gadget id="calculator">1 + 9</gadget>
<output>10</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>