A manuscript is 4,500 words, and Xiao Ming has entered (4/9) of this manuscript, how many words are left to be entered?
一份稿件4500字，小明录入了这份稿件的(4/9)，还剩多少字没有录入？
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">1 - (4/9)</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">4_500 * (5/9)</gadget>
<output>2_500</output>

<result>2_500</result>