If 8 kg of water is added to 10% saline salt water, it becomes 8% saline salt water, how many kilograms of the original salt water.
含盐10%的盐水中，加入8千克的水后，变为含盐8%的盐水，原来的盐水多少千克．
<gadget id="calculator">0.1 - 0.08</gadget>
<output>0.02</output>

<gadget id="calculator">0.64 / 0.02</gadget>
<output>32</output>

<result>32</result>