number is reduced to one tenth of the original number, and the new number is 612 less than the original number. What is the original number.
一个数缩小为原数的十分之一，新数比原数少612．原数是多少．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">612 / 9</gadget>
<output>68</output>

<result>68</result>