100 grams of salt water contains 10 grams of salt, what is the amount of salt in water
100克盐水中含盐10克，盐是水的多少
<gadget id="calculator">100 - 10</gadget>
<output>90</output>

<gadget id="calculator">10 / 90</gadget>
<output>1/9 = around 0.111111</output>

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