The store originally had (3/4) tons of table salt, sold (1/2) tons and then shipped in (2/3) tons, how many tons of table salt does the store have now?
商店原有食盐(3/4)吨，卖出(1/2)吨后又运进(2/3)吨，商店现在有食盐多少吨？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

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

<gadget id="calculator">(3/4) - (1/2)</gadget>
<output>1/4 = around 0.25</output>

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

<gadget id="calculator">(1/4) + (2/3)</gadget>
<output>11/12 = around 0.916667</output>

<result>11/12 = around 0.916667</result>