The number A is 3 less than the number B. The quotient obtained by dividing the number B by the number A is 3. What is the sum of the numbers A and B?
甲数比乙数少3，乙数除以甲数所得的商是3，甲、乙两数的和是多少．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) + 3</gadget>
<output>9/2 = around 4.5</output>

<gadget id="calculator">(9/2) + (3/2)</gadget>
<output>6</output>

<result>6</result>