After the decimal point of number A moves to the left by one, it is equal to (3/4) of number B. The difference between the two numbers A and B is 16.9. What is the sum of the two numbers A and B?
甲数的小数点向左移动一位后就与乙数的(3/4)相等，甲、乙两数的差是16.9，甲、乙两数的和是多少．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">16.9 * (3/4)</gadget>
<output>12.675</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(3/4) - (1/10)</gadget>
<output>13/20 = around 0.65</output>

<gadget id="calculator">12.675 / (13/20)</gadget>
<output>19.5</output>

<gadget id="calculator">19.5 - 16.9</gadget>
<output>2.6</output>

<gadget id="calculator">2.6 + 19.5</gadget>
<output>22.1</output>

<result>22.1</result>