If the minuend is 45 greater than the difference and the subtrahend is 12 less than the difference, what is the sum of the minuend, the subtrahend and the difference?
如果被减数比差大45，减数比差小12，那么被减数、减数与差的和是多少．
<gadget id="calculator">45 + 12</gadget>
<output>57</output>

<gadget id="calculator">45 + 57</gadget>
<output>102</output>

<gadget id="calculator">102 + 57 + 45</gadget>
<output>204</output>

<result>204</result>