There are (5/6) tons of cement on the construction site, (1/2) ton is used to build the house, and (1/6) ton is shipped in. How many tons of cement are there on the construction site now?
建筑工地有水泥(5/6)吨，建房用去(1/2)吨，又运来(1/6)吨，工地上现在有水泥多少吨？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

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

<gadget id="calculator">(5/6) - (1/2)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/3) + (1/6)</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>