Use a (4/3) meter long bamboo pole to measure the water depth of a fish pond. The bamboo pole is (1/3) meter above the water surface. How many meters is the water depth?
用一根(4/3)米长的竹竿测量一个鱼池的水深，竹竿露出水面(1/3)米，水深多少米？
<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

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

<gadget id="calculator">(4/3) - (1/3)</gadget>
<output>1</output>

<result>1</result>