In a subtraction formula, the sum of the minuend, the subtrahend and the difference is 120, and the subtrahend is the difference (1/3), then what is the difference.
在一个减法算式里，被减数、减数与差的和是120，而减数是差的(1/3)，那么差等于多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) + 1 + (1/3) + 1</gadget>
<output>8/3 = around 2.666667</output>

<gadget id="calculator">120 / (8/3)</gadget>
<output>45</output>

<result>45</result>