added a 0 to the end of a number, and the resulting number is 63 more than the original number. Do you know what the original number was?
我在一个数的末尾添了一个0，得到的数比原来多了63，你知道这个数原来是多少吗？
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">63 / 9</gadget>
<output>7</output>

<result>7</result>