Starting from a point that indicates -1 on the thermometer, move up 6 unit lengths, and then move down 5 unit lengths, what is the temperature indicated at this time.
从温度计上表示-1的一点开始，向上移动6个单位长度，再向下移动5个单位长度，此时表示的温度是多少．
<gadget id="calculator">6 - 5</gadget>
<output>1</output>

<gadget id="calculator">(-1) + 1</gadget>
<output>0</output>

<result>0</result>