A colored ribbon, (4/5) meters are used up, and (2/3) meters are shorter than the rest, how many meters is this colored ribbon originally?
一根彩带，用去(4/5)米，比剩下的短(2/3)米，这根彩带原来长多少米？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(4/5) + (2/3) + (4/5)</gadget>
<output>34/15 = around 2.266667</output>

<result>34/15 = around 2.266667</result>