The first addend is 35, the second addend is 27, and the third addend is 18. What is the sum of these three addends?
第一个加数是35，第二个加数是27，第三个加数是18，这三个加数的和是多少．
<gadget id="calculator">35 + 27 + 18</gadget>
<output>80</output>

<result>80</result>