The sum of the two numbers A and B is 64.9. If the decimal point of A is moved to the left by one bit, it is equal to the number B. What is the number A?
甲、乙两数的和是64.9，甲数的小数点向左移动一位就与乙数相等，甲数是多少．
<gadget id="calculator">10 + 1</gadget>
<output>11</output>

<gadget id="calculator">10 / 11</gadget>
<output>10/11 = around 0.909091</output>

<gadget id="calculator">64.9 * (10/11)</gadget>
<output>59</output>

<result>59</result>