In a subtraction formula, the sum of the minuend, the subtrahend and the difference is 242, and the subtrahend is 20% more than the difference. What is the difference? (column equation solution)
在一个减法算式里，被减数、减数与差的和是242，减数比差多20%，差是多少？(列方程解答)
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + 1 + (1/5)</gadget>
<output>11/5 = around 2.2</output>

<gadget id="calculator">242 / 2 / (11/5)</gadget>
<output>55</output>

<result>55</result>