If 5 kg of salt is put into 100 kg of water, what is the weight of the salt in the salt water?
把5千克盐放入100千克水中，盐的质量占盐水的多少
<gadget id="calculator">5 + 100</gadget>
<output>105</output>

<gadget id="calculator">5 / 105</gadget>
<output>1/21 = around 0.047619</output>

<result>1/21 = around 0.047619</result>