The sum of the numbers A and B is 69.3. If the decimal point of the number B is moved one place to the left, it is equal to the number A. What is the number B?
甲、乙两数的和是69.3，如果乙数的小数点向左移动一位，就等于甲数，那么乙数是多少．
<gadget id="calculator">1 + 10</gadget>
<output>11</output>

<gadget id="calculator">69.3 / 11</gadget>
<output>6.3</output>

<gadget id="calculator">10 * 6.3</gadget>
<output>63</output>

<result>63</result>