What is the sum of two adjacent numbers to 18600?
与18600相邻的两个数的和是多少
<gadget id="calculator">18_600 - 1</gadget>
<output>18_599</output>

<gadget id="calculator">18_600 + 1</gadget>
<output>18_601</output>

<gadget id="calculator">18_599 + 18_601</gadget>
<output>37_200</output>

<result>37_200</result>