A kind of sugar water weighs 400g, and the mass of sugar accounts for 30%. Now a certain mass of sugar is added to it, and the mass of sugar accounts for (3/8). How much is the sugar water now?
一种糖水重400g，其中糖的质量占30%，现在又向其中加入一定质量的糖，此时糖的质量占(3/8)．现在的糖水有多重？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (3/10)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (3/8)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">(7/10) / (5/8)</gadget>
<output>28/25 = around 1.12</output>

<gadget id="calculator">400 * (28/25)</gadget>
<output>448</output>

<result>448</result>