The subtrahend is 0.64, which is 0.28 more than the difference. What is the minuend?
减数是0.64，比差多0.28，被减数是多少．
<gadget id="calculator">0.64 - 0.28</gadget>
<output>0.36</output>

<gadget id="calculator">0.36 + 0.64</gadget>
<output>1</output>

<result>1</result>