A rectangle is (7/10) meters long and (3/5) meters wide, what is its perimeter in meters?
一个长方形的长是(7/10)米，宽(3/5)米，它的周长是多少米？
<gadget id="calculator">7 / 10</gadget>
<output>7/10 = around 0.7</output>

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

<gadget id="calculator">(7/10) + (3/5)</gadget>
<output>13/10 = around 1.3</output>

<gadget id="calculator">(13/10) * 2</gadget>
<output>13/5 = around 2.6</output>

<result>13/5 = around 2.6</result>