The number A is (1/3), which is more than the number B (1/15). What is the sum of the numbers A and B?
甲数是(1/3)，比乙数多(1/15)，甲、乙两数的和是多少？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">(1/3) - (1/15)</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">(1/3) + (4/15)</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>