The decimal point of a number moves one place to the right, and the number increases by 6.3. What is the original number.
一个数小数点向右移动一位，这个数增加6.3．原数是多少．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">6.3 / 9</gadget>
<output>0.7</output>

<result>0.7</result>