The difference between A and B is 436.5. If the decimal point of B is moved one place to the right, it is equal to A. What is A?
甲、乙两数差是436.5，乙数的小数点向右移动一位就等于甲数，甲数是多少．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">436.5 / 9</gadget>
<output>48.5</output>

<gadget id="calculator">48.5 * 10</gadget>
<output>485</output>

<result>485</result>