The product of (9/8) and (7/2) of a number is (1/2), what is this number?
一个数的(9/8)与(7/2)的积是(1/2)，这个数是多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">7 / 2</gadget>
<output>7/2 = around 3.5</output>

<gadget id="calculator">9 / 8</gadget>
<output>9/8 = around 1.125</output>

<gadget id="calculator">(1/2) / (7/2) / (9/8)</gadget>
<output>8/63 = around 0.126984</output>

<result>8/63 = around 0.126984</result>