Add 30 grams of salt and 70 grams of water to 120 grams of 30% salt water at the same time, what is the salt content at this time?
在120克含盐30%的盐水中同时加入30克盐和70克水，这时含盐率是多少．
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">120 * (3/10)</gadget>
<output>36</output>

<gadget id="calculator">36 + 30</gadget>
<output>66</output>

<gadget id="calculator">120 + 30 + 70</gadget>
<output>220</output>

<gadget id="calculator">66 / 220</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(3/10) * 1</gadget>
<output>3/10 = around 0.3</output>

<result>3/10 = around 0.3</result>