The restless decimal point jumps 2 places to the left and 3 places to the right from the original position, and the number obtained at this time is 72 more than the original. 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．原来的数是多少．
<gadget id="calculator">1_000 / 100</gadget>
<output>10</output>

<gadget id="calculator">10 - 1</gadget>
<output>9</output>

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

<result>8</result>