One piece of steel is (1/4) meter long and (1/5) meter shorter than the other. What is the total length of the two bars?
一根钢材长(1/4)米，比另一根短(1/5)米．两根钢材一共长多少米？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/4) + (1/5) + (1/4)</gadget>
<output>7/10 = around 0.7</output>

<result>7/10 = around 0.7</result>