The weight of salt water in a glass bottle is 1/11 of that of water. After adding 15 grams of salt, the weight of salt accounts for 1/9 of the total amount of salt water. How many grams of salt water is in the bottle?
一个玻璃瓶内原有盐水，盐的重量是水的(1/11)，加入15克盐后，盐的重量占盐水总量的(1/9)，瓶内原有盐水多少克．
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">(1/9) * 15</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">15 - (5/3)</gadget>
<output>40/3 = around 13.333333</output>

<gadget id="calculator">(1/9) * 11</gadget>
<output>11/9 = around 1.222222</output>

<gadget id="calculator">(11/9) - 1</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">(1/9) + (2/9)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(40/3) / (1/3)</gadget>
<output>40</output>

<gadget id="calculator">11 * 40</gadget>
<output>440</output>

<gadget id="calculator">40 + 440</gadget>
<output>480</output>

<result>480</result>