After the decimal point of a decimal is moved one place to the left, the sum of the original number is 7.15, so what is the decimal.
一个小数的小数点向左移动一位后，与原来的数的和是7.15，那么这个小数是多少．
<gadget id="calculator">10 + 1</gadget>
<output>11</output>

<gadget id="calculator">7.15 / 11</gadget>
<output>0.65</output>

<result>0.65</result>