In a subtraction, the sum of the minuend, the subtrahend and the difference is 240, and the subtrahend is 3/5 of the difference. What is the difference of this subtraction.
一道减法中，被减数、减数、差的和是240，减数是差的3/5．这道减法的差是多少．
<gadget id="calculator">240 / 2</gadget>
<output>120</output>

<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">120 * (5/8)</gadget>
<output>75</output>

<result>75</result>