Half of a number is (7/8), what is this number.
一个数的一半是(7/8)，这个数是多少．
<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">(7/8) / (1/2)</gadget>
<output>7/4 = around 1.75</output>

<result>7/4 = around 1.75</result>