A pot of water is used up (1/3), and then 3 glasses are filled. At this time, the ratio of the used part to the remaining part is 2:3. How many glasses can be filled if the whole pot of water is poured into such a glass?
一壶水，用去了它的(1/3)，又倒满3个玻璃杯，这时用去的与剩下的比是2：3．如果这壶水全部倒入这样的玻璃杯，可以倒满多少杯？
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

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

<gadget id="calculator">(2/5) - (1/3)</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">3 / (1/15)</gadget>
<output>45</output>

<result>45</result>