Mr. Zhang is a philatelist. He has collected 270 Chinese stamps, and the number of foreign stamps is less than that of Chinese stamps (1/9). How many foreign stamps have you collected? (Answer in two ways).
张老师是集邮爱好者，他收集了270张中国邮票，收集的外国邮票比中国邮票少(1/9)．收集的外国邮票有多少张？(用两种方法解答)．
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">1 - (1/9)</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">270 * (8/9)</gadget>
<output>240</output>

<result>240</result>