A manuscript has a total of 5,400 words. Xiao Ming entered (7/9) of this manuscript. How many words are left?
一份稿件共5400个字，小明录入了这份稿件的(7/9)，还剩多少字没录入？
<gadget id="calculator">7 / 9</gadget>
<output>7/9 = around 0.777778</output>

<gadget id="calculator">1 - (7/9)</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">5_400 * (2/9)</gadget>
<output>1_200</output>

<result>1_200</result>