When x=8, find the value of (56-4.5x)/4.
当x=8时，求(56-4.5x)/4的值．
<gadget id="calculator">1.125 * 8</gadget>
<output>9</output>

<gadget id="calculator">14 - 9</gadget>
<output>5</output>

<result>5</result>