How much is it to combine 564-123=441, 523-441=82 into one formula?
把564-123=441，523-441=82合成一个算式是多少．
<gadget id="calculator">564 - 123</gadget>
<output>441</output>

<gadget id="calculator">523 - 441</gadget>
<output>82</output>

<result>82</result>