Congcong originally had 72 stamps. After she gave (1/9) to Mingming, they both had the same number of stamps. Do you know how many stamps Mingming originally had?
聪聪原来有72张邮票，她把(1/9)送给了明明后，两人的邮票就同样多，你知道明明原来有多少张邮票吗？
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">72 * (1/9)</gadget>
<output>8</output>

<gadget id="calculator">72 - 8 - 8</gadget>
<output>56</output>

<result>56</result>