How many meters is a (3/10) meter long rope combined with a (6/10) meter long rope?
一条(3/10)米长的绳子和一条(6/10)米长的绳子合起来是多少米？
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">6 / 10</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(3/10) + (3/5)</gadget>
<output>9/10 = around 0.9</output>

<result>9/10 = around 0.9</result>