A rope uses (7/8) m, which is less than the remaining (3/4) m. How many meters is the total length of this rope?
一根绳子用去(7/8)m，比剩下的少(3/4)m，这根绳子一共长多少m？
<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(7/8) + (7/8) + (3/4)</gadget>
<output>5/2 = around 2.5</output>

<result>5/2 = around 2.5</result>