A manuscript has a total of 4,500 words. Aunt Li typed this manuscript (5/9), how many words are left untyped?
一份稿件共4500个字，李阿姨打了这份稿件的(5/9)，还剩下多少个字没有打？
<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">1 - (5/9)</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">4_500 * (4/9)</gadget>
<output>2_000</output>

<result>2_000</result>