A's number is 180, which is 40% less than B's number. What is the sum of A's and B's numbers?
甲数是180，比乙数少40%，甲乙两数的和是多少？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">180 / (3/5)</gadget>
<output>300</output>

<gadget id="calculator">300 + 180</gadget>
<output>480</output>

<result>480</result>