batch of cement was shipped to build a house, (7/8) tons were used in the morning, (1/2) tons were used in the afternoon, and (5/6) tons remained. How many tons were shipped in total?
修建房子运来一批水泥，上午用去(7/8)吨，下午用去(1/2)吨，还剩(5/6)吨．共运来多少吨？
<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">(7/8) + (1/2) + (5/6)</gadget>
<output>53/24 = around 2.208333</output>

<result>53/24 = around 2.208333</result>