When the little sloppy was calculating a number minus 99, he accidentally took the minus sign as a plus sign, and the result was 200. What should be the correct result?
小马虎在计算一个数减去99时，不小心把减号看成了加号，结果得200．正确的结果应该是多少？
<gadget id="calculator">200 - 99 - 99</gadget>
<output>2</output>

<result>2</result>