The number B is 29.7 more than the number A, and the decimal point of the number B is moved to the left by two digits, which is exactly equal to the number A. What is the sum of the number B and the number A?
乙数比甲数多29.7，乙数的小数点向左移动两位后正好等于甲数，乙数和甲数的和是多少．
<gadget id="calculator">100 - 1</gadget>
<output>99</output>

<gadget id="calculator">29.7 / 99</gadget>
<output>0.3</output>

<gadget id="calculator">0.3 * 100</gadget>
<output>30</output>

<gadget id="calculator">30 + 0.3</gadget>
<output>30.3</output>

<result>30.3</result>