If 4.5x=(7/2), then x=how much.
若4.5x=(7/2)，则x=多少．
<gadget id="calculator">7 / 2</gadget>
<output>7/2 = around 3.5</output>

<gadget id="calculator">(7/2) / 4.5</gadget>
<output>0.777778</output>

<result>0.777778</result>