The sum of the minuend, the subtrahend, and the difference is (11/15), and the subtrahend is 1 (1/5) times the difference. What is the subtrahend?
被减数、减数、差的和是(11/15)，减数是差的1(1/5)倍，减数是多少．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>