Put 5 grams of salt into 10 kilograms of water, what is the percentage of salt in the salt water?
把5克盐放入10千克水中，盐占盐水的多少．
<gadget id="calculator">5 + 10</gadget>
<output>15</output>

<gadget id="calculator">5 / 15</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>