To build a 600-meter-long canal, the full length (1/3) was built on the first day, and the full length (1/4) was built on the second day. How many meters were repaired in two days?
修一条长600米的水渠，第一天修了全长的(1/3)，第二天修了全长的(1/4)．两天一共修了多少米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/3) + (1/4)</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">600 * (7/12)</gadget>
<output>350</output>

<result>350</result>