The two cups are filled with 23% and 44% salt water respectively. After mixing these two cups of salt water together, the concentration of the salt water becomes 30%. If 300 grams of 15% brine is added, the concentration becomes 25%. I would like to ask: How many grams of the original 44% brine.
两个杯子里分别装有浓度为23%与44%的盐水，将这两杯盐水倒在一起混合后，盐水浓度变为30%．若再加入300克15%的盐水，浓度变为25%．请问：原有44%的盐水多少克．
<gadget id="calculator">44 / 100</gadget>
<output>11/25 = around 0.44</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(11/25) - (3/10)</gadget>
<output>7/50 = around 0.14</output>

<gadget id="calculator">23 / 100</gadget>
<output>23/100 = around 0.23</output>

<gadget id="calculator">(3/10) - (23/100)</gadget>
<output>7/100 = around 0.07</output>

<gadget id="calculator">(7/50) / (7/100)</gadget>
<output>2</output>

<gadget id="calculator">300 * 2</gadget>
<output>600</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">600 * (1/3)</gadget>
<output>200</output>

<result>200</result>