Xiaohong has 84 stamps, of which (3/8) are Chinese stamps, and the rest are foreign stamps. How many foreign stamps are there?
小红有84张邮票，其中(3/8)是中国邮票，其余的是外国邮票，外国邮票有多少张？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (3/8)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">84 * (5/8)</gadget>
<output>105/2 = around 52.5</output>

<result>105/2 = around 52.5</result>