A cup of pure milk, Xiao Ming drank (1/2) for the first time, filled it up with water and drank (1/3), then filled up with water, and finally finished it. How many glasses of water did Xiao Ming drink?
一杯纯牛奶，小明第一次喝了(1/2)，加满水后又喝了(1/3)，再加满水，最后喝完．小明喝了多少杯水？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">(1/2) + (1/3)</gadget>
<output>5/6 = around 0.833333</output>

<result>5/6 = around 0.833333</result>