There are 2 grams of salt in 100 grams of salt water. If 3 grams of salt are added, how much does it account for in salt water?
100克盐水中有盐2克，如果再加上3克盐，那么占盐盐水的多少．
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">100 + 3</gadget>
<output>103</output>

<gadget id="calculator">5 / 103</gadget>
<output>5/103 = around 0.048544</output>

<result>5/103 = around 0.048544</result>