The original ratio of the numbers A and B is 6:5. Now the number A is increased by 180 and the number B is increased by 30. At this time, the ratio of the numbers A and B is 18:11. What is the original sum of A and B?
甲、乙两数原来的比是6：5，现在甲数增加180，乙增加30，这时甲、乙两数的比是18：11，求原来甲、乙之和是多少？
<gadget id="calculator">18 / 11</gadget>
<output>18/11 = around 1.636364</output>

<gadget id="calculator">(18/11) * 30</gadget>
<output>540/11 = around 49.090909</output>

<gadget id="calculator">180 - (540/11)</gadget>
<output>1_440/11 = around 130.909091</output>

<gadget id="calculator">(18/11) * 5</gadget>
<output>90/11 = around 8.181818</output>

<gadget id="calculator">(90/11) - 6</gadget>
<output>24/11 = around 2.181818</output>

<gadget id="calculator">(1_440/11) / (24/11)</gadget>
<output>60</output>

<gadget id="calculator">60 * 6</gadget>
<output>360</output>

<gadget id="calculator">60 * 5</gadget>
<output>300</output>

<gadget id="calculator">360 + 300</gadget>
<output>660</output>

<result>660</result>