Add 3 kg of salt to 100 kg of water, what is the percentage of salt in the salt water?
在100千克水中加入3千克盐，盐占盐水的多少．
<gadget id="calculator">100 + 3</gadget>
<output>103</output>

<gadget id="calculator">3 / 103</gadget>
<output>3/103 = around 0.029126</output>

<result>3/103 = around 0.029126</result>