The restless decimal point jumps 2 places to the left and 3 places to the right from its original position. At this time, the number obtained is 72 more than the original one. Smart kid, do you know what the original number is? Answer: What is the original number?
不安分的小数点从原来的位置向左跳动2位，又向右跳动3位．这时所得的数比原来多了72．聪明的小朋友，你知道原来的数是多少吗？答：原来的数是多少．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">72 / 9</gadget>
<output>8</output>

<result>8</result>